In any given city the number of homes for sale is a small percentage of the population, and even then most of those homes will trade between incumbent owners. P

In any given city the number of homes for sale is a small percentage of the population, and even then most of those homes will trade between incumbent owners. Prospective first time buyers are competing over the number of new housing units & units freed by out-migration, downsizing, and death. People are living longer. Boomers are aging in place. It’s pretty ordinary that would-be buyers outnumber these units more than 99:1. So merely being in the top 1% of prospective buyers is necessary, not sufficient. And since prices have gone up recently, prospective buyers are higher income than the city as a whole.