Couldn't you also argue that (and I appreciate there are exceptions to every rule) more gets done, with more efficiency, when everyone is together in one place?

Couldn't you also argue that (and I appreciate there are exceptions to every rule) more gets done, with more efficiency, when everyone is together in one place? Certainly when reading body language, micro actions and the "feeling in the room" is important and video calling doesn't cut it. So they end up in one place. You could move that place to somewhere with great air, but because it's a centre of importance and a community of people is needed to support it, within X number of years enough of a city will have built up causing the same kinds of pollution and you're back in square 1?