I don't see the argument? Some people like renting. Landlord profit margins mostly depend on supply and demand, just like home prices do. Enough supply will bring their margins down to grocery store levels, and renters won't be at much of a disadvantage compared to owners.

Owning means saving a lot of money and accepting a lot of price risk and transaction costs. I own a house and like it, but I know for a fact that it's not for everyone.

If there was one monopolist landlord who charged through the nose, that could be a problem, but I don't know of any housing markets like that. Landlords keep raising their prices because demand outpaces supply and they can get away with it.