I think Tesla has another, more classic problem that is also happening to hit right at the same moment as the Other Stuff... The traditional car companies are entrenched, established behemoths that are very slow to change direction. But once they do, they have so much natural momentum that they're really hard to compete against. In 2018, the electric car market was comprised of a bunch of Teslas, the Smart ForTwo, the VW e-Golf, Leaf, Kia Soul, Hyundai Ioniq, Honda Clarity, Focus, Fiat, Bolt, and the i3. The Focus had a max of 115 mile range and sold a grand total of 1,964 units at its peak in 2014. Clarity Electric had a range of 89 miles and was only available as a lease in CA and OR. The Leaf sold pretty well, but had a range of 149 miles and was kind of funny-looking. The Bolt had decent range and was more widely available, but was a pretty small car. You could get 125 miles out of an e-Golf. I can't find US numbers for the e-Golf in my three seconds of searching, but I suspect there aren't that many. BMW sold about 6,300 i3s in 2017. In 2018, Tesla sold something like 93,000 Model 3s.
In the intervening years, however, the established automakers have been able to develop their own platforms and get them to market. There's well over two hundred-fifty different models on the market right now, versus a small handful seven years ago. Tesla's bet on the polarizing styling for their pickup truck is great if you like that sort of thing, but if you just need a truck occasionally and don't want to look like you're piloting some sort of spaceship, you can choose from the Rivian, Ford, Chevy, GMC, or Hummer entries. The mid-size sedan and CUV/SUV market segments are also littered with entries from the conventional automakers. The automakers that have a dealership on every corner, advertising budgets, and a history in the psyche of the consumer.
On top of that, hybrids are gaining steam again and while the traditional manufacturers are well-suited to be able to toss a gas engine into the mix, Tesla doesn't have that foundation on which to build, plus they've branded themselves as a champion of all-electric and kind of backed themselves into a corner with that.
When all they had to compete against were some token city-car type entries, they were able to really mop up some massive market share in the "electric car" segment. But I think the problem they're going to continue to have is that an electric car isn't really its own market segment any more and their market share of the "automobile" segment is much smaller.