Also companies have proven that they are more than willing to outsource everywhere, hiring people anywhere. There are reason they still hire in very expensive place like SF. You bet that it is a problem that will go away at some point, and very likely a significant part of HN readership is working hard solving it.
You need to realise that moving commuter to the city centre is a race to the bottom. Stuff like hyperloop are a perfectly fine way to spend private investment money, but as far as public money is concerned, that would be better to invest it in area that look beyond a world where physical location is an employee primary competitive advantage.