Well, fundamental dynamics are likely harder to counteract than some of the human factors which may be a bit more arbitrary and anachronistic. Not that this is a show stopper, just something to keep in mind.

Regardless, I like your suggested approach.

I think something like universal basic income might be an example. This gives people a little more security to improve their education or be entrepreneurial. Ultimately, this ought to give them improved probability of upward mobility with less risk of downward mobility.