I hear you on homes but housing overall - apartments included should not be owned by corporations for investment purposes imho.
Rough stats I’ve seen are 25% of homes are now owned by institutional investors. And 44% of CA residents are renters. Having a quarter of the inventory taken off the market means the prices are going to go up.
Land is expensive. We can build more. We can also stop allowing those who have more than enough already continue to apply downward pressure.
Wild speculation with no fundamentals isn't attractive to big firms.
A single apartment building (or complex) might have around a hundred tenants and a handful of employees. That's a large enough operation that it's straight up irresponsible not to set up an LLC or corporation for it.