RTO may work as long as your teams are geographically co-located and return to the same office. In my experience, a lot of teams in recent years have been staffed without this aspect in mind, because with remote it made no difference. So now, even with RTO people still have to constantly sit in remote meetings / work rooms with the rest of the team in other office(s), and the benefit of in-person collaboration is still lost. Arguably, this "remote between offices" mode is the worst of them all, because remoting in from the office almost always results in an inferior experience compared to remoting in from a well-tuned home setup.