The problem then is changing the regulatory framework - reduce barriers to entry and the need for Uber per se vanishes. That said, industrial-scale corporate civil disobedience is extremely unlikely to be the most socially-optimal way to achieve this.
Might not be the most optimal way, but on the other hand, it might be the only way to change things. The traditional approach would be to go to regulators, hat in hand, and say "Please sir, can I disrupt the system?," and get the answer, "No, of course not. Now sod off." By demonstrating a working, superior system to consumers, you now have regulators in the position not of giving permission, but of taking away a preferred option.