Their battery tech isn't unique (and not theirs entirely either). Everything except the infotainment system is "simple" (in relative terms).
I'm not saying they're not great, but that the stock is expensive
The differentiating factor for Tesla has never been their battery tech or physical car quality. It's somewhat like Apple in that the combination of decent (but not the best) hardware and software brought together in a cohesive way creates something better than the individual parts. You're buying an "experience", which people often make fun of but ultimately I feel is more representative of what customers are looking for than looking at pure specs of the car. And a lot of the "experience" is powered by software or by custom silicon or other non-car things.
Android still can't compete with Apple in terms of the polish and cohesiveness of the product despite Google and Samsung being juggernauts, and I think Tesla vs. Ford/GM/etc. is much the same. Just pick up a Galaxy S22 and use it for a bit. The apps feel like a patchwork of different UX's, different ways of using the phone, and different modules that don't talk to each other.
Correct me if I'm wrong somewhere, but having 20% of a market vs 1% is a significant difference.
It's also quite more approachable for people to spend on a premium phone than a premium car, since a premium car costs more than what many "westerners" make in a year while an iPhone is less than a "westerners" monthly salary.
My point was that people don't buy BMW over Mercedes because they have 20 more horsepower. And if it does come down to brand, as you said, there are a lot of very powerful brands, like BMW or Mercedes that have been playing the brand game longer than the founder of Tesla has been alive. I don't think I would put my money on Tesla if winning will come down to brand.
Time will tell, I have a lot more faith in Tesla that the legacy automakers at this point, if that changes, I will sell. If my 5 year lead is correct, I think we will see level-5 FSD by then anyways.
tesla is the iphone of cars. minimalist, performant, fun to drive. not to mention the no other car company is building or has a supercharging network. GM and Ford are the blackberry of EVs