WFH really means convert your room into an office or rent a coworking space. Is anyone paid extra for that? Nope! And it's really not for everyone either, you cannot get interactive with coworkers in the same way.
As for the social aspect - to the degree it's possible at work you can cultivate that online and during occasional get-togethers. It's not worth the time waste and environmental destruction associated with commuting.
you just need a computer and the company usually mails one to you
As to converting the room into an office, I think everyone that works with a computer has a desk and a chair at home. You just need to put the company machine on it.
But some people do not want to be part of "the masses", they want to fly around in flying taxis because they think they're better than everybody else. That's why companies like these exist (and hopefully fail).
Then again, it's an individual solution to a societal problem. I would prefer a solution for the masses, like getting rid of cars in cities and improving public transport.