UK has the feature that you can bootstrap new towns because from the new town you are probably within 1000s of jobs in neigbouring towns. I used to joke to myself you could get a C# job in commuting distance (car may be needed) from anywhere in the UK even in the sticks. (Before remote working boom)

It’s a half hour drive to the nearest station and I don’t exactly live in the middle of nowhere.

US could build a new town 50 miles out of San Francisco with 4tph.

Holster-Gilroy looks potential. Petaluma-SantaRosa too, or Fairfield.

From a Quick Look on the map Those could all massively increase in size and be easily commutable to the entire SF area