It should be obvious that a company should cater to individual needs, but they rarely do. E.g. open offices are extremely tiring for most introverts, there should be quiet zones/rooms where these people could go to focus/recharge. Ideally they should be offered private space.

There should be strict rules on what is accepted behavior and volumes (of talking) in an open office. Distracting behavior should be reported immediately and corrected.

People misunderstand diversity as a set of checkboxes, when "cater to individual needs" is the real core of it.

Small companies can't really offer that many options. Not everyone works for a large company with multiple offices, different room types, etc.

The open office is a concept that saves space too. We have a large open plan office and a few extra meeting rooms people can book. If we were to start walling up the place - half our workers would have to go.

" If we were to start walling up the place - half our workers would have to go."

They would have to go to another office space? Companies move all the time.

Floorspace adapts to company operations. Not the other way around - unless something is terribly broken.

He's saying he doesn't want to pay for more real estate, and so far his employees are putting up with it.

That's expensive and doesn't scale for most companies