Definitely true.
But, can you imagine Osceola Parkway being a private road instead? Push the entrance gates all the way out to the I4 exit ramps. Or, Buena Vista Dr or World Drive?
Way back when, Disney would have needed to keep ownership of all those roads and not transfer them to RCID. Now that they have, transferring them back to Disney would be difficult. Probably not impossible, but nobody has proposed that.
Likewise, wasn't there a recent project that added dedicated Disney bus lanes to some of these roads? If they were private roads, that would still work. But, if they were public maintained by the county, I cannot imagine the county deciding to add dedicated lanes for just one business was a good plan. I suppose they could have done it as toll lanes. Just charged a few million in tolls to cover the cost.....
Similarly, there's probably a bunch of liability differences that come into play. Today, if two cars get into an accident on World Drive and one of them blames a pot hole for causing the accident. It's a public roadway. If World Drive had never been turned into a public road, but was still a private road, is that more like an accident in a parking lot then?
Imagine if all the RCID owned land was still Disney owned land. One huge all private land continuous parcel with private everything. That would give some new meaning to being in the Disney bubble.