It's not just AirBnB. It's also that real estate has been backstopped by the Fed and the government. So far it's a can't-lose investment over longer time spans,

It's not just AirBnB. It's also that real estate has been backstopped by the Fed and the government. So far it's a can't-lose investment over longer time spans, so if you can afford to stack up properly it's a sure thing way to build wealth. Housing cannot simultaneously be affordable and a good investment. Affordable housing means existing homeowners lose equity.