Who doesn't have open plan offices? There are about three people left in the tech industry these days who still have a private office.
> But it’s potentially a lot cheaper up front not to have offices, just like open plan offices were cheaper, so I fear MBAs may discount these drawbacks and make WFH the default in many, many places where it’s a bad idea.
Working in an open plan space is simply inferior to working remotely, except in rare cases where your team is in a bullpen and working full time on a specific project together. It's inferior for engineers because of distractions, and it's inferior for the company because of real estate costs.