Right now it’s a niche electric car maker in a world of internal combustion engined cars, so will Tesla retain its sales figures when the big manufacturers move into its space and go electric too?
Tesla is miles in front of the competition with charging tech, so that will either be enough to bring people in, or they can make money by licensing it to other manufacturers
Tesla has already developed enough of a brand attachment with many buyers in a few short years to weather a great many storms. I don't see them being in any serious danger any time soon.