But how do you get there? You have to wait for some legitimately illegitimate charge and then get banned for life by invoking the chargeback, so ... how can that be scaled to impact Uber?
The only realistic shot at this is through shaming this behavior - the ability for monoliths to lock you out of large swaths of services is a serious, serious problem.
Most of us don't have personal vendettas against Uber or similar companies and want to take them down.
But if they do treat you like shit, then it should be your right (and duty) to fight back to discourage such behaviour in the future.
The goal isn't to take them down with tons of chargebacks, simply to make the chargeback rate correlate with the bad customer service. They clearly don't care about the latter but will definitely care about the former. If it does take them down however it won't be a big loss and will clear the space for a better competitor to step in.
The only realistic shot at this is through shaming this behavior - the ability for monoliths to lock you out of large swaths of services is a serious, serious problem.