The space issue is fundamental: there just aren't that much space around cities as they stand today. The only pragmatic solutions are:
1) Build up. Everyone wants to live in these areas, so build as tall of buildings as possible and just spread out upwards. Doesn't solve the personal office problem though since Tokyo is super dense but I don't think anybody has a private office?
2) Build new cities. America is big, and there is still plenty of space left to build. But it looks to me like a combination of power-law economics, plus locale desirability, and political willingness to invest into infrastructure is pushing most ordinary people right back into the clutches of 1).
Even as a remote worker, I used to think this was true.
I no longer believe this is the case.
In remote video calls each human is like an augmented cyborg integrated with their computer and the internet.
The nature of IRL meetings tend to disrupt the augmentation aspect. Above a certain number of people perhaps augmentation becomes more obstacle then advantage though.
The above is anecdotal and your experience may differ.
Build new cities, you're on the right track though I doubt it will happen from scratch like in China. Rather mid-tier cities such as Huntsville and Boise will grow into larger cities.
Remote work has its up and down sides. I've been doing it for two years. Most of the time it is better but there are occasions when collaborating on some idea or document would work better in person at a whiteboard. But those get fewer all the time and the remote collaboration tools get better over time. I'd love for all of us to have Surface Hub whiteboards but they're still too expensive to have a reasonable ROI. Over time though, the price will go down, as will that of other high fidelity collaboration tools.