Tesla has already lost market share in Europe and North America. There are many smaller and cheaper alternatives and that’s what people are buying.
The price difference just isn’t that big in relative terms (the starting prices are all relatively high), but the difference in what you get is huge. And I think that’s part of the allure of Tesla - can a 2010-era-supercar be built for $25k? What about less?
I ended up getting a 2nd hand diesel BMW because I got the feeling that the market would move a lot in the next 5 years.