Q: Which are the worst business ideas you have worked on?
The worst business idea we worked on was a DVD-trading website right before we built EchoSign (Adobe Sign).
The DVD market was still growing at the time, and it made some sense, and the website was really slick. But the unit economics did not fully make sense and clearly it was not the future.
You have to do a start-up that matters today, will be important in 3–4 years, and can be huge in 7–10 years.
Betting on a flat or declining trend is a terrible idea unless you are a true short-timer.
Glad that one died after the prototype phase.