key point, those 6 figures SWEs earn, they would spend to "local non SWE" economy.

your local datacenter does not care about local chickens or eggs, or private tutor, or pretty much anything at all. not even energy, it is has its own nucleaer reactor nearby. it is one-way economy from now on. you are only a consumer, not a producer. there is virtually nothing you (nor average joe) can provide that "datacenter" needs.