My complete frustration with the RTO situation is that it is so backwards thinking. Instead of trying to enhance remote work to alleviate the negatives and enhance the positives, we just stop with "Zoom+Slack" and throw up our hands and stop innovating and trying to make better remote work.
You're absolutely right. Big corporations don't like remote work and don't want to enhance it. Tech enthusiasts is the only hope for improvement in this area. The good news is that there are innovative projects that can significantly enhance remote work. I suggest trying MeetingGlass - video meetings through virtual frosted glass. This tool can make it easier for both employer and employees meet via video on a fair terms without violating prvacy.