> A landlord can only get the amount of rent that a tenant is willing to pay.

A place to live is a rather inelastic commodity. If the price goes up across the board, people will pay, until they can't possibly afford the going rent and are driven into homelessness.

> this service is not responsible for higher rents, the market is. This service has effectively cornered the market, and is manipulating the market through shortages, driving rents higher.