I think the point the OP is making is that the burden of car ownership in somewhere like London is already very high. So those who can do without by and large d

I think the point the OP is making is that the burden of car ownership in somewhere like London is already very high. So those who can do without by and large do. The remaining folks who do still have a car do so for a reason (job, primarily) and are unlikely to get rid of it just because Uber exists.