When was the last time you've used a big corp product that sounded like a water-cooler idea? Serendipitous innovation myth doesn't apply for these huge, hard-to-steer, profit-to-assets maximizing, financialized mega corps anymore. Nor creating 10 different messaging apps or torturing decade old products with growth hacking is innovation, it is cancerous growth born out of promotion-hacking. Water cooler schmoozing helps more with building the clout for that promotion than enhancing the productivity of the world.
They will make you work from office because they can, because that is easier on the managers and execs. They are doubling down on real estate because they have sunken costs, execs themselves probably have serious personal real estate positions and companies have a sizable chunk of h1b-captive employees that has to stick around anyway.
If anything, WFH had a positive impact on cutting through the bullshit. When speaking has more friction, the actual work has to do the talking, and that is a positive thing. You don't have to deeply enact a state of belief in other people's self-importance, as you get to say "oh fuck off" out loud when the meeting is off.
Going to the office is like going to the church of whatever objective function a company holds dear. You're surrounded by it for hours, and can't blaspheme around true believers and kool aid drinkers around that water cooler. At home, you're homed in a space that reminds who you are, your ultimate sovereignty and all the objective functions of your life, work being but one.