[oezi]

You started with "it does come down to literally greed", but the rest doesn't include what I would consider greediness, namely that many times the parents do not properly pass the wealth down the generations because they want to hold onto it until retirement or death.

Financially it would make most sense to pass money early (invested in ETFs) and ensure that children can step on the property ladder early on, but this requires parents to pass a lot of wealth in their mid-40ies to mid-50ies.