Comment by Novosell

Unless you actively start destroying modern technology and infrastructure, it's never gonna go back to people generally buying locally produced.

Or you'd have to get a totalitarian government with a plan economy with this issue as a primary focus. Neither sounds realistic to me.

Either situation would also require many people to die as people now live in places which can't support themselves with the nearby farmland.

So what are you, in practice, actually advocating for?