> If I have an apartment and can rent it out for $2500/month why shouldn't I?

Perhaps because “you” value morals other than “make the most money I possibly can”? Or you want to provide housing that’s affordable by those who do the blue collar, nearly-minimum-wage work that powers our modern cities?

Profit isn’t everything. I’ll even go so far as to say that the current expectation to get “maximum profits at any cost” is a (“The”?) driving factor in the problems we lament in our society.