Just to clarify, I am no Tesla fanboy. In fact I have a Polestar 2.
Tesla is probably going to start devaluing somewhat when it comes to automotive due to EV sales slipping, but they have a pretty broad business at this point. Battery, Solar, robotics, manufacturing technology they developed out of necessity.
Value:
1) They were a newcomer to the automotive industry, as such they basically skipped the traditional dealership model. Only now are there 'dealers' (Another side effect is rather than a massive old style warehousing system they were able to take advantage of just in time manufacturing/logistics philosophies)
2) They pushed computerization to a higher level in the automotive industry, some speculated this was another business model avenue, but hasn't panned out yet. (Self driving)
3)Early days they couldn't make enough cars to meet demand, so their price was high.
4) They vertically integrated the crap out of their production so profit at every level. That meant those high prices were a profit boon until recently but has also let them control the market price of new EVs to some extent.
5) They are still ramping up repair, parts and service. This should be another profit center in the near future.
6) Tesla charging infrastructure is still superior for the moment. This may flip now that NACS is set to become the actual standard.
7) Heavy duty. Semi trucks to start, but that drive train hopefully makes its way into other things. Garbage trucks, city buses, etc. Not the only one that can provide this, but they certainly have the range advantage at the moment.
Probably more, but I don't see Tesla as a bad company. They will get better as they have been doing. I still think true self driving is decades away, but advanced cruise control seems to be a fairly solved problem now.