As a parent with a kid in child care, my feeling is that it's more efficient to make programs available to everyone, and manage wealth disparity with effective taxation.
I think people are more likely to support the funding of programs that they can use. And it's better to avoid segregating children by economic status.
The person you asked your question of claims to be a biologist, but you dismiss the relevance of biology.
...basing on biology is clearly flawed...
It sounds like you might be more interested in an answer from a sociologist. Or are you asking the biologist to argue that basing it on biology is not flawed?
One of the challenges is of course that the wealthy don't get paid. They own and control assets that appreciate in value.
What if we ended private ownership of businesses. I don't mean ending ownership of businesses, but that every business became publicly tradeable. No more private ownership of businesses.
I'm not actually advocating this (yet), just curious what people think would happen if we did this.
Another way of thinking about it is betting your entire bankroll for 99.9....% certainty that you will win $1.
Say you go into the casino with $1000.
Bet:
$1 lose.
$3 lose.
$9 lose.
$27 lose.
$81 lose.
$243 lose.
$729 oh wait you can't bet that much, you only have $457 left. Dang, do you bet $457 or find another $272?
Bet $457 and you win $914! Congrats you're now only down $86!
Or maybe you lost and are down $1000.
Or maybe you scrounged up $272 so you could keep playing
Bet 729 and lose. Now you're down $1272.
Or
Bet 729 and you win 1458. Pay back the $272 you borrowed from your buddy, you're still up $186.
You just bet $729 dollars for a %50 chance of winning $186.
But what are the chances of getting 6 or 7 losses in a row? 1 in 64, or 128 respectively, actually worse because roulette wheels aren't 50/50, they're 18/19 (18 wins and 19 losses in 37 plays on average) or worse. So losing 6 times in a row will happen 1 in 54 plays, 7 losses is 1 in 106.
Google says roulette wheels spin 55 times per hour so with your strategy you will lose your bank roll in about one hour assuming your starting bet is 0.1% of your bank roll.