I never said it was an "elaborate scheme orchestrated by all the homeowners." It is a natural result of people independently acting purely based on their personal incentives.

Homeowners don't need to orchestrate and elaborate scheme, they just vote for the politicians who will prioritize increasing home values because that will help them financially. That politician will enact policies favorable to homeowners because that is what their constituency wants. That will encourage more people to become homeowners because people see homeownership as a financially beneficial endeavor. That will increase the power of homeowners as a constituency which will lead to more politicians courting homeowners with favorable policies making homeownership more attractive. And on and on the cycle goes until it isn't "feasible and profitable to build new homes" because we have made it difficult and expensive through all our pro-homeowner policies.