Don't forget that Uber are congesting the road, polluting, and going around without adequate insurance, all issues that affect even people who never use the service.
So are taxis. So is every other form of transport that uses a road. I never ride the bus but in Avignon, I get to wait behind long congested lines of buses clogging the ring road when I just want to get my daughter from her little school. I never ride those buses. Also your logical fallacy is a little silly: how does going around 'without insurance' harm people that don't use the service? That statement is just untrue. ALL drivers in France must have insurance.
Actually, the insurance problem is more complex: Normal drivers insurance does not pay if you were transporting a stranger for-profit. That’s why you need a special insurance for that, which most uber X drivers do not have
All cars do that, but most cars are driven like 2 hours a day. The insurance coverage Uber has is rather skimpy despite Uber's success in changing regulations to get it to be considered adequate.