Rent control, however, encourages wasteful use of space. It discriminates in favor of those who already occupy houses or apartments in a particular city or region at the expense of those who find themselves on the outside. Permitting rents to rise to the free market level allows all tenants or would-be tenants equal opportunity to bid for space. Under conditions of monetary inflation or real housing shortage, rents would rise just as surely if landlords were not allowed to set an asking price, but were allowed merely to accept the highest competitive bids of tenants.