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"We've done this before" is the most comforting line in a vendor pitch — and the one that needs the most unpacking. Similar is not the same. The real value of experience isn't the solution they built last time. It's what went wrong and what they learned. Ask: can you walk me through what went sideways and how you handled it?
"You need a custom solution" is often the most expensive answer to a question you haven't fully asked. Most early-stage products aren't as unique as they feel from the inside. The cost of custom isn't just the build — it's the maintenance forever. Build custom where it matters, borrow everything else.
"We follow best practices" is the vaguest promise in a vendor pitch. Best practices for whom? What works for a bank processing millions of transactions is overhead for a startup finding product-market fit. Your ten-person company shouldn't be built with Fortune 500 ceremony. The best practice for early-stage founders is working with people who know when the textbook doesn't apply.
"It's fully scalable" ends the most questions in vendor pitches. It should start them. Everything scales until it doesn't. A system for 500 users looks nothing like one for 500,000 — different architecture, different cost profile. Scaling isn't just a technical milestone, it's a financial one. Ask: scalable to what?
"We'll build it in six weeks" is the most seductive line in a vendor pitch. Six weeks usually gets you a demo, not a product. The gap between "it works when I click through it" and "it works when a thousand customers hit it" is called phase two — and that's where the real time and money live. Ask what's deferred.
Every expensive tech mistake I've seen started the same way: someone signed a check they couldn't evaluate. Not because they were careless — because the person selling understood the details in a way the buyer didn't. That asymmetry is where the expensive mistakes live. You don't need to become technical. You need someone technical in your corner.
The most expensive hiring mistake founders make isn't hiring the wrong person — it's hiring the wrong person for the stage. A CTO who scaled a 200-person org may be completely wrong for a team of three. Early-stage companies need builders, not process architects. Sometimes ten hours a month of senior guidance beats a salary that eats a third of your runway.
"We need to start over" — four words that have burned more runway than any failed marketing campaign. A rewrite means rebuilding everything you already have before you can build anything new. And the same team that created the current mess will be building the next one. Fix incrementally instead.
Your cloud provider isn't a technology decision — it's a financial commitment that compounds quietly while you're focused on product. Managed services feel free early on, but by the time you have ten thousand users, those decisions are driving real costs and the switching cost is baked in. Know which doors you're closing.
When you hire a dev agency, you're not buying software — you're buying a relationship with someone else's priorities. Their incentive is to deliver something that looks finished. Yours is to own something you can build on. Before you sign that check, make sure you're buying an asset, not a lease.
