Although completely impractical, it's an interesting thought experiment. If you knew that your bio-kid was going to be placed with a random family, and you wan

Although completely impractical, it's an interesting thought experiment. If you knew that your bio-kid was going to be placed with a random family, and you wanted that child to have the best start in life, you'd lobby to improve the quality of schools in all districts. Instead, at the moment, rich people move district or pay for private tuition. Because they want the best opportunities for their offspring. There is no way in the world that people would accept a situation where all babies are randomly shuffled at birth. But - if there was - the rational self interested agent would want to improve opportunity everywhere so their genetic material had a better chance.