Economics

A lot of people also seem to ignore the fact that the risks are not the same for everybody.

E.g. four people get the same business opportunity. For person A, failure means they have to ask their parents to bail them out. For person B, they have to move in with their parents. For person C, they have to move their family into a tent under the bridge. And for person D, they have to ration their medication and risk dying.

Person A could probably try things out a few times without suffering too much other than embarrassment. Person B, maybe a couple times, but that's pushing it. The others have to pretty damn sure it'll pay off, and even then, the risk might be too much.