Housing investment is a business. Buying the house is a risk, and you sink money and effort into it in the early phases, in the hope of getting profit out of it in the later phases.

If you are going to make that business unprofitable then no one will do it. People won't sign up for the risk, cost, effort and frustrations of being a landlord with no upside.

While we're on the topic, why not prevent programmers from putting their salary up? After all software is essential to society these days?