Single biggest purchase and wealth building instrument is buying REAL ESTATE / HOUSE.
Most millennials are not leaving on the streets homeless. They are paying high rent prices = money wasted = money that could have been going towards building their wealth long term, towards their homes.
High education costs prevented them from buying homes early which in turn impacted their net worth long term.
Simple example: If you buy a house in an average area when you are 30 - by 35 you have at least $50,000 that you paid towards your net worth (assuming very budget 1000/month mortgage).
Whats happening instead today? High housing costs and debt load from education prevent younger generation from bulding their wealth early through real estate. Something previous generations enjoyed.
We need more affordable housing, we need to change building codes and zoning laws to allow construction of affordable homes easily (that younger folks/families/singles can afford to buy). We need to build out infrastructure!