This is nepotism at work, plain and simple. Many of the desirable jobs require that you first gain experience in an unpaid internship, which is obviously impossible for the working class (no matter how skilled they may be).

I currently hold an enviable position at a company that I had to fight my way into, and I can't tell you how many dip-shit rich kids with virtually no redeeming value I've seen skate right in because their parents could afford to pay their rent and bills for them well into their 20s.

It's not at all fair, but it is actually quite legal so long as it's part of a vaguely defined "for credit" program.