The same story is playing out in London as well, with the consequence that many central flats lay empty most of the time, owned by foreigners who would rather lose out on some rental income than risk the hoi polloi damaging their artwork.
By the way, in NYC it is usually not as hard to find the true, human owner(s) of apartments purchased by "corporations" as the article implies. It takes more than a quick Google search, but the information is usually around if someone wants to know about a particular unit.