The city of Philly was consolidated in 1850. My guess by progressives tho i’m not sure. Time to unravel the mess of these large cities. Maybe breakups might create better governance.
The idea of a large city broken up into separate legal jurisdictions has occurred to me. States have seceded, or in more modern times threatened to do so. It makes you wonder, is New York City so monolithic that a rebellion leading do dismantling of the political control and administration of the city out of the question?