'If you still want to play "what if..." I would guess that heavy selection toward financial success to the exclusion of food-providing success would eventually result in a population crash.'

Would this lead to the financially successful having to support the finacially unsuccessful for the sole purpose of breeding?

Or would this lead to a crash (not in population) but in the value of money?

Would it depend on how much importance a financially succesful person (in general) valued money (their own comfort) over the continuation of mankind?

y