I agree that "in office" culture implicitly values informal, face-to-face interactions that happen "for free" if you are in office. The problem, in an increasingly globalized world, is that it's only "free" for the company - the employee commutes (and buys lunch, etc).

I also find the casual interactions in-office valuable - but I'm not going to "eat" the cost of enabling them for the good of the company. If someone actually offered me an in-office position that took the time I spent enabling those interactions seriously (i.e. compensated me for them) - I would be a lot more receptive to returning!

Instead, companies tend to want it both ways: they want their employees to donate the time to get the benefits of working in-office, then they want to use the same employees lower raw productivity stats to fire them down the line. I'm old enough to recognize such an obvious trap.