Well, because you need a partner who believe and want to sail in the same ship. Because that partner will suffer the same penalties you can suffer, like working for free for some time, having a low salary at the start, working extra hours, etc. Hiring someone to do the job is simply a problem because you can't afford paying one if you want quality.

But also, the few investors I've been talking in the past they want a formal team with a commitment thinking, and by saying you will just hire someone to do something is not enough, at least even on leaning.