Comment by scoofy
If you understand the underlying reasons for why an investor would buy an actively depreciating asset, then you understand why OP suggests--correctly in my opinion--that this is a non-story.
We have a housing shortage. As long as it looks like the shortage will continue, investors--people--will buy depreciating assets in the hopes that population growth will cause them to be worth more tomorrow than they are today. If it's not Private Equity, it'll be rental companies. If it's not rental companies, it'll be mom & pop landlords. If it's not mom & pop landlords, it'll be people looking for a second home or pied-a-terre with upside potential. The problem is the perpetual shortage clearly indicating increasing economic rents, instead of a trend toward the cost of production.
This is a housing crisis but most Americans are treating it like a housing whoopsie. We treat it with kid gloves, where we fight about the "correct" way to build just enough housing, in just the right places, instead of pointing a firehouse of development incentives, to the point of literally subsidizing private development and public development.
It's basic economics, but our electorate will tie itself in knots to make the housing crisis fit their niche political narrative.
Besides not enough new inventory in some areas, one major problem is allowing excessive housing hoarding and not taxing it enough to reduce gamification conditions leading to absurd exploitation. It needs much more regulation and increased progressive taxation for people/orgs who monopolize empty houses simply as speculative "investment" financial chicanery.