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It is currently very difficult for vertical AI startups to raise from pre-seed to Series A. I’ve had many discussions with portfolio and potential portfolio companies about this and decided to look deeper. What I realized is if you are not thinking of being a compound startup, you’ll struggle to raise, regardless of the team or metrics you are showing.
What is a compound startup?
Parker Conrad, Rippling's CEO, coined the term in 2021 and described Rippling as the first company to call itself one. A compound startup:
Combines several point solutions into one integrated product
Shares one interface and UX components across those products
Revolves around a single core type of data, such as employee or customer data
Reduces complexity and cost for the customer
Solves a coordination problem across systems
Rippling meets every point. It connects HR, IT, payroll, finance, and benefits in one employee record, so a new hire automatically triggers everything downstream.
The North Vancouver company, Jane, started with practice management and now covers booking, billing and payments, patient communication, forms, charting, and telehealth for health practitioners.
A long product list alone doesn't meet that bar. Unrelated features make a company unfocused, while shared data and workflows make the whole worth more than its parts.
What market data is telling us: Compound vs Narrow
Tidemark surveyed more than 200 vertical SaaS companies for its 2025 benchmark. 59% offered more than one product and 41% sold a single one.
Median | Multi-product | Single-product |
2024 ARR growth | 60% | 50% |
Net revenue retention | 110% | 105% |
Revenue per account | $26,900 | $15,000 |
Estimated TAM | $513M | $250M |
Gross revenue retention | 90% | 92% |
Multi-product companies grew about 20% faster in relative terms, expanded more within each account, and addressed a market twice the size. But their gross revenue retention was slightly lower (90% vs. 92%), suggesting that breadth alone doesn't make a product stickier. The advantage comes from creating more opportunities to expand within accounts.
Companies aren't classified this way when they raise, so I can't say compound startups raise more easily. Stronger companies may simply have the capital and customers to launch a second product. What VCs do see is narrow companies without explosive growth, such as 10x year over year, having a hard time.
Why narrow companies struggle to raise
VCs are hesitant to back narrow startups for the following reason:
It’s easier than ever to build a competing product, and customers can switch more easily. That puts pressure on pricing, growth, and unit economics.
Customers want some software providers but not too many, and they're actively cutting vendors.
Compound companies have a pricing advantage as they can earn revenue through several models, such as payments, and can charge less for each product while still earning more per customer.
Behind all three is the question of control.
The most defensible companies own something other workflows depend on, such as the employee record or the clinical record. An AI scribe saves clinicians real time, but an investor will still ask who owns the patient relationship, where the clinical data lives, and what the product can grow into. Whoever holds the data holds the expansion path.
What we’re seeing in our portfolio
Every company needs to start narrow. The wedge needs a strong pain point and a solution customers love. Compound companies then add product lines fast, promote them to existing customers, and use a slice of each new product as the next wedge. They build based on customer feedback about the biggest pain points.
That speed shows up in the numbers. They have higher net retention, earn more per customer, and word of mouth is stronger. Narrow companies with similar metrics have a harder time raising follow-on capital.
What to do about it
The compound model makes sense when one initial product naturally unlocks at least three adjacent budgets. If those adjacencies don't share customers, data, or workflows, staying narrow is usually safer. When you raise, pitch your wedge and how you'll compound from it. Investors want to hear four things.
The painful workflow you win first.
The data, user, or process that becomes central to the customer.
The adjacent products and budgets you can reach, and what links them.
How expansion and retention improve your economics.
You no longer have to wait for $10M in revenue to launch a second product line. Your competitor set is also larger than you think, because startups are compounding fast.
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