If Uber/Lyft didn't exist, public transportation in US would still be horrible for a myriad of reasons. I don't know if Uber/Lyft make things worse, but they certainly aren't the root cause.
That's what I wrote:they aren't the root cause. My point was:They are a BAD solution and they are contributing to the problem.
Make public transportation infrastructure more convenient than cars and cheaper than cars, and the problem solves itself.