Why do some people never have a chance to make a fortune in their whole lives?

The implication is that I hope that "unexpected" wealth will come to myself or people around me.

Since it is "unexpected" wealth, it is certainly irregular for the same person or different people.

Not some people, but most people have no unexpected fate.

Don't covet the disproportionate possession of ability and effort, otherwise things that don't belong to you will eventually be taken back involuntarily.