I think that statement is incomplete. It should be 'do what you love [that users will love too] and the money will come'. Also, I think it might help to try and find partners that are strong in areas you are weak, for example, someone great at sales/marketing.
Quite so. If I sound cynical, it's just that I'm 'on the rebound' right now from a somewhat unwise business pairing. (Dammit! someone else already registered hermitcrab.com :) )