As another commenter pointed out - most tax incentives for living in a home you own do not apply to investors. Investors get those benefits "for free" because they are a business and all the costs of running a business are deductible. The incentives you speak of actually puts regular folks on a more even footing as corporate folks.

Stuff like bonus depreciation - yeah, let's get rid of that. Or 1031 exchanges. Regular folks cannot benefit from it.