You can't force people to take a lower rate of return. They'll just put their money elsewhere. Frankly, even if we could convince people to sell/rent homes at cost, it still wouldn't make things affordable. We make housing more expensive than it needs to be, and we need to fix that.
This may be controversial but I think that people who work in public sector urban planning should understand how the real estate development business actually works. bankerandtradesman.com/planning-chi...