Brainwaves by Burak Büyükdemir
Field notes from 26 years of investing in early-stage startups.
April 28, 2026
Your tech is not the answer
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I can predict a founder's failure in one sentence.
A founder books a call. Smart engineer. Years at Google or Stripe. Built something genuinely impressive — AI, blockchain, computer vision, whatever's currently called cutting-edge.
Then they say it:
"We built this amazing tech. Now everyone can use it. We see opportunities in lots of verticals."
That's the moment I know.
The Solution-First Trap
Every solution-first founder runs the same play:
→ Build something cool first
→ Hunt for an industry to "disrupt"
→ Force-fit the tech into problems customers never named
→ Spend a year telling people they have a problem
Then they wonder why nobody's buying.
What slow death looks like:
→ Demos go fine. Nobody comes back
→ Every call starts with "let me explain why you need this"
→ CAC climbs. Organic is zero
→ Investors get polite, then quiet, then ghost
→ The team asks what the ICP is. The founder shrugs
If you have to convince people they have a problem, you're solving the wrong problem.
The Reset
Three things I tell every founder stuck here:
1. Stop demoing. Start interviewing.
Find 20 people in your imagined ICP. Don't show anything. Ask:
"Walk me through the last time you tried to do X."
2. Listen for their words, not yours.
If they use your language, you're projecting.
If they get frustrated in their own — you've found something.
3. Ask: "What did you do instead?"
Spreadsheets. Interns. Duct tape.
That's your real competition.
Stripe is the canonical example
❌ "Let's build payment infrastructure." → Nobody integrates
✅ "Developers hate implementing payments." → $90B company
Same engineers. Same capability. Different starting point.
The hardest admission
The brilliant thing you built may not be what anyone needs.
The question matters more than the answer.
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