https://dqydj.com/net-worth-by-age-calculator-united-states/
75th percentile gets to only $800k by age 70, and that is including the equity in their home. Maybe the beneficiaries of the 70% to 90% households will end up with real estate worth a few hundred thousand, but I do not see much wealth being passed down beyond that.
Labor is only going to get more expensive as greater proportions of the population age out of the workforce and become labor buyers rather than suppliers. Unless many start dying younger than anticipated without using a lot of medical and nursing home care, I would not expect much if I was their descendant.