I like cities, but I also really enjoyed the couple of times I've worked at parks like this. There's a lot to be said for a predictable commute and a window full of green things. I've found that harder to come by when I work in cities.
The best people out there can make money literally from anywhere, why the heck would they go to some compound of industrialized personalization like that?
The notion that the current employees would want to move to the cities using that argument could be replaced with anything. "Night shifts" or "working in the nude"; they accepted the job under these conditions.
The preference is baked into the premise
Of course, I'd much rather life and work in the real thing, which is the literal opposite of what the article proposes, so there's that.
If you think people who only need to work 4 hours a week would waste their time in the overhead inherent in the structure of a corporate office park then you don't know people who value their time
Since an office can only be in one place and therefore satisfy one subset of 'the best people's preferences - remote working is the logical conclusion for getting the best people who are also fussy about location.