[alehul]

The more simple your MVP can be, the more indicative it is that you have a market.

If you need to build for years to release something [1], it's less likely that you're addressing a real need. The best products can start dead simple, even ugly, but still solve the problem.

[1] Deep tech is the obvious exception here.

[wolco]

The problem with some deep tech is the tech doesn't solve a problem until the next generation. It's less appealing as a solo bootstrap founder business.

[godzillabrennus]

It might also be it takes years to learn the skills to build something yourself.