Google co-founder says GOOD-BYE in NYC real estate exit (youtube.com)

Lots of headlines and politically-excited people talking about these exits as a bad thing, but is it? Is it so bad if billionaires with 100 houses sell their unoccupied, central houses?

The only real downside I see is that people of means, who don't want to stay in a hotel for security/privacy reasons, and much less would be interested in an AirBNB, might just not be able to comfortably stay in NYC.