But then I was also going to say something about doctors, lawyers, and other professionals that form some kind of barrier around themselves... being someone who is in one of those groups.
the further I take this down the road(no pun intended), the more perplexed I find myself.
:: edited for clarity
If Uber were simply an app that connected people and handled payment (for a fee) without exerting any other control, that would fit the parable.
Instead, Uber exerts all kinds of control over the drivers and is simply replacing one incumbent with regulatory capture with another incumbent.
Your argument needs more nuance. Regulatory capture happens when no one in the general public is organized or invested enough to be part of the lobbying pool, or generally due to attrition caused by government corruption.