Five years from now, I think we will not see "remote only" for a large company and think "ooh, they value their employees I guess", but rather, "uh oh, they like to think of their employees as being like virtual servers, easy to spin up and easy to shut down the moment you don't need to pay for that capacity".
That's basically how the movie industry has always worked. Why keep people on your books when you're not actively in production? It's one of those cases where organized labor seems to work out well for all sides. The unions provide talent and craft support when/where it's needed, then they go away when the work is done.
It'll be interesting to see if more industries are able to adopt a similar model. Similar incentives exist, but a company that makes software or hardware isn't an on-again, off-again concern like film production.