I do miss the collaboration aspect, but I can charge my social batteries on weekly lunch zoom calls with my friends

IMO this is a big part of why companies are pushing return to work, even if employees hate it. They want the lunch conversation and collaboration to be with other company employees. They want to make sure that if someone has a really cool new idea, that the idea is owned by the company. They don't want the employee to leave to start a company with their friends instead.

If your entire social life is on the Google / Facebook / Apple campus, then any ideas you have are likely to be owned by the company too.

If you work from home, take breaks IRL or online with your friends, etc. then you're less tied to the company. You don't even necessarily need to quit to form a new company. You could even start one while working at your day job, as long as your performance doesn't suffer.