People keep talking about how the county would have had to pay for all of the roads at Walt Disney World. Private developments build, own and maintain their own rides. There’s nothing that requires roads to be built and maintained by a local government.
I don't think anyone suggested the county would need to deal with roads in a scenario where RCID never existed.
There's the scenario where RCID never existed and WDW owned all the land and roads, never transitioned any of it to a government entity.
There's the world that exists today, where WDW transferred lots of stuff to RCID. Where RCID takes care of it and collects taxes to fund that. Taxes that are almost exclusively paid by Disney.
There's the world where RCID is dissolved and replaced by nothing. Where the county now is forced to take over. Not forced by Disney, but by the change from many government jurisdictions to less jurisdictions and the transfer between government jurisdictions.
In the first one, I don't think anyone thinks that WDW could force anyone to take over anything. Even in the second, Disney cannot force RCID to take over a road. What they can do is elect RCID government who agree that RCID should take over a road. That's not forcing them to though. Subtle, but different.
In the third, Disney's ability to elect government that agrees with them is diminished, but not eliminated. Can you imagine two candidates running for county government. Once that opposes Disney something and one that supports it. Disney could pour untold amounts of money into helping them get elected. It could be the most well funded and largest spend on a county election ever.
Using this map:
https://www.rcid.org/wp-content/uploads/2020/02/RCID2020.pdf
In the first scenario, where RCID never existed, all the red roads would be grey WDW roads instead. In this scenario, it's certainly possible WDW might want to transfer some roads to a government jurisdiction, but nothing could force it. There's probably reasons a jurisdiction would want or not want to take over some roads.
In this scenario, I imagine toll plaza's at the boarders where the red roads start. A real and true Disney bubble where you're on Disney property the entire time not bouncing in and out of it. In this corporate compound vision, they could allow Minnie Van service everywhere, but force ride shares only at the boarders. People could take a bus or Minnie Van from Magic Kingdom to the Hotel Plaza Boulevard & South Apopka Vineland Road intersection to pick up an Uber headed East. No need to allow Uber pickups within the private compound.
It might be good that this is an imaginary scenario.
PS: I should clearly never own a 27,000 acre compound.