Keeping parts or warranty around is going to be a distraction for "small and young" companies. Since most of Tesla's value is how much it can grow in the future and how fast, we are likely to see Telsa sacrifice out of warranty and collision repair in exchange for new cars development cycle. I don't blame them for making that choice, and I think customers should be aware of what they are signing up for.The collar, or bushing that secures the pull-out spray handle in the base/stem on my kitchen faucet is wearing out, and allowing play to develop, which is not a desired trait on something that is regularly swiveled during the course of usage.
The maker, Kohler, does not break it out as a separate part, and instead offered to send an entire new faucet, without hesistation.
Tesla puts the bare minimum effort that it can in the servicing and supporting of their cars. Some will repeatedly espouse their methods as "forward thinking" and "cutting edge" or some form of 4D chess, but in durable, or white goods, terms, they might as well be treated as effectively disposable.
Even those who don't keep their vehicles long term might be caught out by their practices if not enough of an aftermarket support base develops.
For those who do keep their cars longer term, like an owner of a German marque who can walk into the dealer and order parts for a 25-year old model, that would be a bitter pill to swallow.
To be fair, any small botique car companies (Ferarri? Lambo? Lotus?) would have the same decision to make and their customers should also be aware of it. Mercedes and BMW? I don't know if it is US market that has the part cost problem or if their European customers have the same expensive to repair and maintain problem US customers have as well. Or if they are just expensive because of their complex designs.