I'd like to add to this, only because it is an early stage item but maybe a little unrelated:
If you are an early stage startup and your founders have a habit of talking about "competitors", run like hell.
> If you are an early stage startup and your founders have a habit of talking about "competitors", run like hell.
Why? Comparing what the competitors are doing can be a great way to come up with new ideas
+1. and if they say things like "we're going to disrupt the industry," again, run.
There were many things I did not like about working for Jeff Bezos, but one I did like is he kept repeating this.