Stop Building Funnels. Start Building Flywheels.

Every agency pitch deck in America has the same slide in it. You’ve seen it. The triangle. Awareness at the top, consideration in the middle, conversion at the bottom. Neat little arrows pointing down. Sometimes they add “retention” or “advocacy” as an afterthought stuck underneath the triangle like a basement apartment nobody wants to visit.

The marketing funnel has been the default mental model for how businesses think about growth for decades. And I’m going to tell you why it’s not just outdated. It’s actively costing you money by shaping strategy around a buyer journey that no longer exists.

This isn’t theoretical. We track how our clients’ customers actually find them, evaluate them, and decide to buy. The journey looks nothing like a funnel. It looks like a pinball machine. And once you see it that way, you can’t unsee it.

I. The Funnel Assumes a Buyer Journey That Doesn’t Exist Anymore

The funnel model works on one core assumption: buyers move through sequential stages. They become aware of you, then they consider you, then they decide to buy from you. Top to bottom. Linear. Predictable.

That assumption was questionable ten years ago. In 2026, it’s fiction.

Here’s what the research actually shows. Gartner found that B2B buyers spend only 17% of their total buying time meeting with potential suppliers. The other 83% is independent research, peer consultation, and internal deliberation happening in channels you cannot see or measure. Buyers complete 70 to 80% of their purchase journey before they ever talk to your sales team. By the time they fill out your contact form, the decision is mostly made. Your funnel didn’t guide them there. They guided themselves.

They don’t start at the top of your funnel and work their way down. They bounce between channels, skip stages, loop backward, stall for weeks, pick up where they left off on a different platform, and make decisions based on information they consumed months ago in places you’ll never track.

And that was before AI search added another layer.

II. AI Blew Up the Funnel Completely

The traditional funnel at least had the virtue of being partially trackable. You could see the Google search, the ad click, the landing page visit, the form fill. The attribution was imperfect but it existed.

AI search destroyed even that.

When someone opens ChatGPT and asks “who should I hire for digital marketing in Oklahoma,” they get a synthesized answer with citations. They don’t click through to your website. They don’t enter your funnel. They don’t trigger your retargeting pixel. They read the AI’s recommendation, maybe check one or two of the cited sources, and either add you to their mental shortlist or they don’t. You will never see this interaction in your analytics.

Perplexity, ChatGPT Search, and Gemini don’t even have a click-based model. The entire interaction happens inside the AI interface. One researcher estimated that 93% of AI search sessions end without a single website click. Your funnel literally cannot capture these interactions because no one enters the funnel. They get their answer and move on. But the brand impression still happened. The evaluation still happened. The shortlisting still happened. It just happened in a place your marketing stack can’t see.

This is the dark funnel, and it’s massive. Similarweb data shows that direct traffic—the clearest proxy for word-of-mouth and unattributed discovery—accounts for over 70% of visits to leading B2B platforms like Gong, HubSpot, and Outreach. These aren’t companies failing at attribution. They’re companies whose buyers are finding them through conversations, AI recommendations, peer referrals, and dark social shares that will never show up as a tracked touchpoint.

The funnel model can’t account for any of this. It was designed for a world where the buyer journey was visible and sequential. We don’t live in that world anymore. As we explored in The Entity Gap, brand visibility in AI systems follows fundamentally different rules than traditional search—and the funnel was never built to account for them.

III. What a Flywheel Actually Is (And Why Most People Explain It Wrong)

HubSpot popularized the flywheel concept back in 2018 and they deserve credit for that. But most people reduce it to “put the customer at the center” and leave it there. That’s not useful enough to build strategy around.

Here’s how I think about it, and how we build around it at TMG.

A funnel is a one-directional process. Leads go in the top, some percentage fall out at each stage, customers come out the bottom. The energy you put into the top (marketing spend, content, ads) produces a one-time output. When you stop putting energy in, the output stops. There’s no momentum. There’s no compounding. Every month you start from zero.

A happy client refers someone. That referral mentions your name in a LinkedIn comment. That comment gets indexed. An AI system picks up the mention. Someone discovers you through the AI citation. They become a client. They refer someone. The wheel spins faster.

The critical difference is this: a funnel extracts value at each stage. A flywheel creates value at each stage that accelerates the next stage. In a funnel, marketing generates leads and hands them to sales. In a flywheel, marketing generates content that builds brand authority that drives AI citations that generate inbound leads that become clients that generate case studies that become content that builds more authority. Every output feeds back into the system.

The reason this matters right now, specifically in 2026, is that AI search rewards the exact behavior a flywheel produces. Brand mentions drive AI visibility. AI visibility drives discovery. Discovery drives clients. Clients drive testimonials and referrals. Testimonials and referrals drive brand mentions. The flywheel and the AI citation economy are built for each other.

IV. The Dark Funnel Is Actually the Flywheel’s Best Friend

Here’s the part nobody talks about.

Marketers treat the dark funnel like a problem. They can’t track it. They can’t attribute it. They can’t prove ROI on the activities that feed it. So they underinvest in it and overspend on the channels they can track, even when those channels are producing diminishing returns.

But the dark funnel is where the flywheel does its best work.

McKinsey found in 2024 that 63% of Gen Z and Millennial consumers discover new brands through peer recommendation or social content, not paid ads. Research shows that 84% of content sharing happens through private channels—DMs, texts, Slack messages, email forwards—not public social posts. When someone screenshots your LinkedIn post and texts it to a colleague, that’s dark social. When someone mentions your name in a private Slack channel, that’s dark social. When someone asks ChatGPT for a recommendation and gets your name, that’s the dark funnel.

None of this shows up in your analytics. All of it drives revenue.

The flywheel model embraces this reality instead of fighting it. You don’t need to track every touchpoint when your system is designed to compound. If you’re consistently producing content that people want to share, building a brand that people mention in conversations, and delivering results that clients talk about, the flywheel spins regardless of whether you can attribute each revolution.

We had a client last year who couldn’t figure out where 40% of their inbound leads were coming from. Their attribution model showed direct traffic and “none” as the source. Funnel thinking says that’s a measurement problem. We looked at it and saw a flywheel working. Their CEO was active on LinkedIn. Their clients were referring people through private conversations. Their brand was being mentioned in AI search results. All of that activity was invisible to their marketing stack but very real in their pipeline. The flywheel was spinning—they just couldn’t see it.

V. How We Build Flywheels (The Actual Framework)

Enough theory. Here’s how this works in practice.

Every flywheel we build has four components, and they have to work together. Remove one and the wheel stops.

Component 1: Authority Content Engine

This is the energy source. You need a consistent publishing cadence that builds topical authority in your core expertise areas. Not random blog posts about whatever’s trending. Deep, specific, data-backed content organized into clusters that signal sustained expertise to both human readers and AI systems.

The content doesn’t just generate traffic. It generates brand mentions when other sources reference it, AI citations when AI systems cite it, social sharing when people find it valuable enough to send to colleagues, and backlinks naturally when publishers link to it as a source. Each of those outputs feeds a different part of the flywheel.

At TMG, our content engine is the articles we’re publishing right now. Each one builds topical authority in marketing analytics, AI search, data-driven strategy. Each one gets shared on LinkedIn, discussed in communities, and increasingly cited by AI systems. That’s not a funnel. It’s a flywheel. The content feeds the brand, the brand feeds the discovery, the discovery feeds the pipeline.

Component 2: Brand Presence Layer

Content alone isn’t enough. You need to exist across the platforms where your audience spends time and where AI systems look for entity signals. This means consistent LinkedIn activity from key personnel. Authentic participation in relevant communities on Reddit, industry forums, and Slack groups. Podcast appearances. Conference speaking. Press coverage. Every platform presence adds another surface area where the flywheel can generate momentum.

The Ahrefs study of 75,000 brands found that brand mentions correlate with AI visibility at 3x the strength of backlinks. Your brand presence layer is how you generate those mentions. Not through outreach campaigns. Through being genuinely present in the conversations that matter.

Component 3: Client Experience Engine

This is where most marketing strategies stop. They acquire the client and move on to acquiring the next one. In a flywheel model, the client experience is the most powerful accelerator you have.

A satisfied client generates referrals. Referrals are the highest-converting lead source in existence. A satisfied client leaves reviews. Reviews build trust signals that AI systems factor into citations. A satisfied client becomes a case study. Case studies are the most persuasive content you can produce. A satisfied client mentions your name in conversations. Those mentions compound into the brand presence that drives everything else.

If your client experience is mediocre, the flywheel slows down. If your client experience is exceptional, every client you serve makes acquiring the next one easier and cheaper. The funnel model treats client experience as an operational concern. The flywheel model treats it as a growth engine.

Component 4: Measurement and Feedback Loop

This is where it gets tricky, and it’s where most businesses revert to funnel thinking because flywheels are harder to measure.

You can’t attribute a flywheel the way you attribute a funnel. You won’t always know which LinkedIn post led to which conversation that led to which referral that led to which client. That’s okay. What you measure instead is the system’s momentum.

• Brand mention velocity. Is the rate of brand mentions across the web increasing month over month?
• Entity authority signals. Is your Entity Authority Score improving?
• Referral rate. What percentage of new clients came from existing client referrals?
• AI citation frequency. How often does your brand appear in AI-generated answers?
• Direct traffic growth. Is unattributed direct traffic to your website increasing?

These are flywheel metrics. They don’t tell you which specific action produced which specific outcome. They tell you whether the system is accelerating. And when the system is accelerating, revenue follows. You don’t need to see every gear turning to know the machine is working.

VI. Why Agencies Still Sell Funnels

If the flywheel model is better, why is every agency still pitching funnels?

Because funnels are easier to sell.

A funnel has clear stages with clear metrics at each stage. Awareness: impressions. Consideration: clicks. Conversion: leads. Decision: sales. You can build a slide deck around it. You can promise specific numbers at each stage. You can report on it monthly with clean charts and graphs.

A flywheel is messier. The metrics are systemic rather than stage-based. The timeline is longer. The compounding effect means the first few months look underwhelming compared to a paid media campaign that generates leads immediately. It’s harder to put on a slide. It’s harder to promise specific numbers. It’s harder to sell.

But harder to sell doesn’t mean worse. It means the agency has to do the harder work of explaining a more sophisticated model. Most agencies don’t want to do that work. They want to sell you a funnel, run your ads, send you a report, and collect the retainer. The funnel is optimized for the agency’s business model, not for your growth.

We’ve seen this play out with prospects who come to us after years with funnel-focused agencies. Their paid media metrics look fine on paper. Cost per lead is reasonable. Click-through rates are healthy. But their business isn’t growing the way those numbers suggest it should. Because the funnel was capturing activity, not building momentum. The moment the ad spend stopped, the leads stopped. No compounding. No flywheel. Just a bucket that empties the second you stop filling it. As we explored in What Happens When You Stop Marketing for 90 Days, the businesses that survive a pause are always the ones with flywheel momentum already built up.

VII. The Compound Math

Let me put numbers on why this matters.

In a funnel model, if you spend $10,000 per month on marketing and generate 50 leads with a 20% close rate, you get 10 new clients per month. Stop spending, you get zero clients. Every month starts over.

In a flywheel model, the same $10,000 in month one generates 50 leads and 10 clients. But those 10 clients generate 3 referrals. Your content generates 2 inbound leads from AI citations. Your LinkedIn presence generates 4 leads from direct outreach. Month two, with the same $10,000 spend, you’re generating 59 leads instead of 50. Month three, the referrals from month two’s clients kick in plus AI citations are increasing as your entity authority builds.

That’s the compound effect. The funnel produces linear returns. The flywheel produces exponential returns. But you have to be willing to invest through the first few months where the compound curve hasn’t kicked in yet—and that’s where most businesses lose patience and go back to buying ads.

VIII. How to Make the Switch

If you’re running a funnel right now and this resonates, here’s the transition plan.

Don’t blow up everything overnight. You need the funnel’s leads while the flywheel builds momentum. Run them in parallel for 90 days.

Start the content engine immediately. Publish twice a month minimum. Deep, authoritative content in your core expertise area. Not SEO filler. Real insight backed by data and experience.

Get your leadership on LinkedIn. Not the company page. The actual humans. Post three times a week with genuine perspective. This is the single fastest way to start generating the brand mentions that feed the flywheel.

Invest in client experience ruthlessly. Every client touchpoint is an opportunity to create the kind of satisfaction that generates referrals and testimonials. If your delivery is mediocre, the flywheel will never spin because the engine that powers it—happy clients talking about you—doesn’t exist.

Start measuring flywheel metrics alongside funnel metrics. Track mention velocity, entity authority, referral rates, AI citation frequency, and direct traffic alongside your traditional CPL and conversion rates. Within six months, you’ll see the flywheel metrics accelerating while the funnel metrics stay flat.

After six months, shift budget from the bottom-funnel tactics that produce diminishing returns to the flywheel activities that compound. You’re not abandoning measurement. You’re graduating to a more sophisticated model that reflects how buyers actually make decisions in 2026.

The businesses that make this transition will spend the next five years building momentum that competitors can’t buy their way past. The businesses that keep running funnels will keep running on a treadmill, working harder every year to produce the same results.

Stop building funnels. Start building flywheels. The math is on your side.

About The Montgomery Group: We’re a data-first digital marketing agency in Tulsa, Oklahoma. We stopped building funnels for our clients years ago. We build flywheels that compound over time—because the data says that’s where sustainable growth actually comes from. If you’re tired of starting from zero every month, let’s talk.