Yes it is, at least for Tesla. From the Q4 letter: "In service, since more than 80% of our repairs are so minor that they can be done remotely, we are expanding our mobile repair service that allows Tesla to make vehicle repairs at an owner’s home or office."
So they can reduce trips to the service centers by 80%. I think that reduces the need for more/larger service centers. And with proper routing their ranger can travel fewer miles while getting all of that done than people driving their cars into the service center and then getting a loaner/Uber to be able to go about their day. So way cheaper, and more convenient for the owners. Sure they may have to hire more service personal, but that isn't an issue. They can even have them homed out of a small office/warehouse hundreds of miles from a real service center.