Vertical SaaS Is Eating Horizontal SaaS — Here's Why

When I started in SaaS, the conventional wisdom was "go horizontal." The biggest outcomes — Salesforce, HubSpot, Slack, Notion — all looked like they served everyone. Vertical SaaS was the smaller, less ambitious cousin. Nice business, capped TAM, lower multiple.

Somewhere between 2022 and 2025, that flipped. The fastest-growing, highest-margin SaaS companies I'm advising right now are vertical. Not by accident — by design. Here's why I think it happened, and what it means if you're sitting on a horizontal product.

The three forces that flipped the script

1. Building vertical depth got dramatically cheaper

Five years ago, building a deeply industry-specific product meant a year of in-person interviews, a custom data model, and at least one founder who had spent a decade in the industry. Today, with low-code, AI-assisted coding, and ready-made primitives for everything from compliance to billing, you can ship an opinionated vertical product in months. The cost of depth collapsed.

2. Buyers in regulated industries got fed up

If you sell into healthcare, legal, construction, or logistics, you've probably watched a customer try to bend a generic CRM into something that handles HIPAA, lien waivers, or DOT compliance. It's miserable. By 2024, those buyers had had enough — and the moment a credible vertical alternative appeared, switching took weeks instead of years.

3. The embedded fintech stack changed monetization

This is the underrated one. Once Stripe Connect, Unit, Adyen for Platforms, and friends became one-click integrations, vertical SaaS could suddenly take a cut of the dollars flowing through the industry, not just charge a seat fee. A vertical SaaS that processes $4B in payments a year doesn't compete with a horizontal CRM. It competes with the bank.

What the numbers actually look like

The vertical leaders I'm seeing land in a fairly consistent pattern:

• Top-line growth of 80–120% year over year, often deep into the $20M+ ARR range.
• Gross margins above 80%, even with embedded payments factored in.
• Net revenue retention frequently above 130%, because they capture more of the customer's value chain — payments, payroll, compliance, marketplace fees.
• CAC payback under 12 months, because messaging is precise and word-of-mouth inside an industry travels at warp speed.

Compare that with horizontal SaaS in the same stage right now — slowing growth, NRR drifting toward 100%, and CAC payback creeping past two years — and you can see why investors have repriced the category.

If you're horizontal today

I get this question a lot: "Should I rip up my horizontal product and verticalize?" Usually the honest answer is no — at least not all at once. The better move is to pick one industry where your data already has the highest leverage, build a thin vertical layer on top of your horizontal core, and double down on it.

Three things to look for when picking the industry:

1. You already have meaningful adoption there. It's much easier to deepen than to start cold.
2. The industry has a regulatory or workflow tax that horizontal tools don't pay. That's where you'll have an unfair advantage.
3. There's a payment, payroll, or marketplace flow you can plug into. That's where the second revenue line lives.

What we're watching next

The next wave we're tracking is vertical AI — AI products built around the proprietary data and workflow of a single industry, often by founders who came out of that industry. The defensibility is absurd. If you're horizontal, that's the wave that should worry you the most.

The TL;DR: "horizontal" isn't dead, but the easy growth in horizontal SaaS is over. Vertical is where the next decade of category leaders is being built.