This is only true if either company ever risk running out of (good) drivers. As I understand it currently there are more workers than jobs, so if a driver decides to cut ties with one of the oligopsies they are unable to get the same amount of work from the competitor.
So: "moving to a competitor definitely applies pressure" -> true; "keep both companies in check" -> false
There are not more workers than jobs, ive worked in the industry and this is a fact. Workers on ridhailing platforms come in varying levels of quality and amount of hours they can supply
You are thinking too much about just workers, when actually the smalelst divisible unit is hours. There is portion of drivers that barely ever switch, and then there is another portion that are constantly looking for the better deal, switching through outh the day. Its a scale.
So to keep drivers happy and on your paltform, you need to implement bonus schemes or have certain base pays.
Im not sure why so many people feel that they can comment on how the ridehailing platforms work without having any real experience in driving for them or working for them.
So: "moving to a competitor definitely applies pressure" -> true; "keep both companies in check" -> false