Or they were thinking along these lines anyway and this was the push to get them over the line. Or they're putting real estate expansion plans on indefinite hold in the case of "you don't need to come back in the office but you can."

Similarly, I suspect that the people moving out of NYC aren't those with a mindset of "I could never live anyplace else on account of the opera." In many cases, they're probably people who were toying with idea already and this accelerated the process.