Though it has some issues, it's an interesting concept. Essentially, not having to worry about other people screwing you over let's you focus on other things.

That'd be similar to how those with financial troubles (i.e. the poor) seem to show less effective IQ in some studies. Worrying about money, how to make the rent, how to pay for X or Y, sucks brainpower from other activities. This is interesting, particularly in our community because some startups attribute their success to financial pressure. Maybe the effects are different depending on duration. Or maybe it's because the startups believe their situation is a matter of choice (they joined a startup) and they have the power to change while those who are in a perpetual state of poverty have fallen into some state of learned helplessness and thus feel powerless in changing their situation.

Though not completely accurate, a simple way to think about is in the context of Maslow's hierarchy of needs.

At the very least, it's fun to think about.