> I think small progressive and libertarian enclaves will get rid of their cameras while remaining landlocked in a sea of municipalities expanding theirs.

Flock will just start putting cameras up on private property and selling the data to the Federal government. Municipalities can do very little to stop this, and local governments are pretty poor at keeping their true reasons out of public forum deliberation. Loophole methods of prohibition ("Can't put up camera masts") are easily thwarted in court.