There is absolutely no reason for ride sharing to not be a protocol. Drivers join a federated network of other drivers they "agree" with and you pick the driver

There is absolutely no reason for ride sharing to not be a protocol. Drivers join a federated network of other drivers they "agree" with and you pick the driver pools you want (and they could be local drivers, or they could be drivers that meet some criteria or vetting process). You could have any number of ride share apps that use the protocol and interface with server infrastructure of each network. If you distribute the authority in the system you decentralize the power structures that produce hostile actors like the brass of Uber and Lyft. Nothing says each city can't have its own app and own driver cooper so long as my app from my city can speak your cities language when I'm there.