Bottom up. Which is why local (1) entities and jurisdictions are going to increase in favor, once again.
Akin: Employment. Personally, I am finished watching my local labor force hollowed out because some version of... "labor arbitrage", I guess, can save a buck an hour moving the work over a border. (And, as often as not, that saving is being indirectly paid for by me, anyway: Outsized military to secure energy interests used for attendant goods transportation. Inflated retail prices feeding telecom oligopolies whose networks, while I like the connectivity, similarly afford displacement of intellectual labor.)
Is such localization perfect? No. But, you asked what/how things might change.
People will start tending to their own communities, as a priority, if and when they want them to get better.
There will be significant downsides to this, as well (e.g. the potential for increased prejudice, perhaps). But, as one old supervisor used to like to state, "everything is a pendulum." I'm not sure I entirely agree with that, but as I get older and my perspective... "matures?", there does seem to be a lot of it around.
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1. For various and significantly differing values of "local".