Just in case you're in a position to change anything about the housing market where you live: Change zoning rules. Incentives for co-living. Reduce flat sizes. Rebuilt office spaces. Or look to Vienna: a big stock of goverment-owned flats with low prices which makes it hard to charge more than those.

Pseudoscience? That's rude. I answered your question in good faith and you take pot shots. Lame dude.

To elaborate, if you eliminate investment property, AirBNBers and Blackrock liquidate their house holdings. The houses come from the previously off market investment properties.