Source: Worked at a ~2k employee multinational when covid hit, it got bought by a bigger corp and got turned into an ~11k employee company later on.
Large companies were already multinational, people from India didn't fly to San Fransisco or Berlin for a meeting, they did it remotely. Some bigwigs and specific consultants did it, but the regular people just used Slack and maybe Zoom to communicate over time zones.
COVID just forced everyone to up their game with this, all meeting rooms got big displays, 4k cameras and Zoom integration after RTO was an option.
People going home got allowances to buy better gear for their home office (Mine was already good, so I upgraded my home theater setup). I had multiple work friends who moved hundreds of kilometers away from the city where our office was.
Even now most people are still 99-100% remote. They only come to the office when there are company-wide parties or team events.
Now I work for a smaller startup-ish company and we're mostly remote, it's recommended to drop by the office once a week, but it's not enforced. Some are there every day, some only come for the parties.
I personally know multiple highly experienced people (20+ years in the field) who 100% refuse any offers that aren't fully remote.