In office isn't higher bandwidth, but it is more fun! I love going traveling to the office and hanging out with people. Hardly any work gets done, but being around people is really entertaining. Bonds definitely form better - whether that is good or bad for business I haven't been able to figure out yet. However, it is better for my social life.
All I know is that if I see someone WFH I know they are getting more work done than if I see them in office. 80% of top performers WFH the majority of the time or are remote.
Also, being remote and traveling into the office for week-long visits the past 3 years, I can say I almost never see people whiteboarding. I've done it once while in office in a meeting and it wasn't needed at all. People using online diagramming tools during zoom meetings? Definitely.
I really miss the social aspects of being in office, but the benefits to Remote work just outweigh those aspects, sadly.
Ultimately, what happens to RTO really depends on the market. If the job market heats back up again, RTO will largely go away. If the job market tightens, then it will dominate. That's because the vast majority of executives and owners want to be in office around their domain. What's the fun of being a billionaire and having to be on zoom all the time?