Earlier quoted context omitted.
This is one of those things that a proper tax structure would do wonders - those who hoard housing should get a kick from a exponential tax. Like, what value are those corporations bringing to people, to the market, and to a country by hoarding houses other than controlling the renting market for some areas? How is that a good thing?
They'll just restructure it so each house (or small group of houses) is held by smaller corporations or other entities. In fact even smallish landlords already do that now but I think it's because credit gets cheaper that way rather than for taxes.
Try to dodge some IRS stuff and you'll see how efficient the government is.