Ultimately, I think two things are going to happen over the next ten years (and I'm being kind by giving it that long):
1) The cities are going to become far more dangerous - the early aughts renaissance of the cities is now over. (Coronavirus killed it, but the George Floyd unrest dug up the corpse and kicked it a few times.) Police forces will be understaffed and reluctant to engage. People will then avoid going to them for anything other than work. Even if they still live there, it's less of a hassle to have karaoke night at a suburb where you're not going to hear gunshots in the background. I think that once the women begin leaving in droves, the men will soon follow.
2) The suburbs, populated with the people who fled, will then get their own crime problems once inevitable stuff like public housing and public transportation trickles in - we all know that's coming and has been a goal of the progressives for a long time. You see protests out there only occasionally now, but when the criminal element now has largely relocated there, and 60% of the controversial officer-involved deaths are there? They'll soon become a junior version of what the people fled from. I also assume that because many of these people are unrepentantly leftist-minded, you'll see THOSE police forces get neutered as well.
Most people don't have the financial means to then run even further out to rural areas like Tim Pool just did. I think that once the suburbs begin to get dangerous, this is going to get very ugly very quick. Under-the-table, anonymous vigilante groups will spring up, and I really don't want to think about it.
Maybe cities and states can start implementing laws and forbidding new people to move there if they're from cities - but how can that even be implemented? We're screwed.