the biggest problem with non technical founders, from my perspective as a programmer who has dealt with many of them, is that they don't have the foggiest idea how long it should take to build something. I've heard far to many say something like, "I told an investor we'd have this built in 3 months".

I generalize of course, the best person I've ever worked for was a non technical founder and he had an uncanny ability to understand this stuff at some level despite no direct experience in it.