Earlier quoted context omitted.
There are reasons to believe they might soon be that big. I'm not saying it's close to a sure bet, but in the Netherlands and Norway they're already the top selling brand - I think any reasonable analysis has to admit the possibility that they might soon replicate that success in larger countries.
You need to check your data. Netherlands and Norway are markets where Tesla is failing extremely hard once competition showed up. They used to be one of the top selling brands, 1-2 years ago. Since then, their market share plummeted. For Norway, in 2020, for all car sales, Model 3 is in the 6th place, and with 1-4th place occupied by BEV from "legacy" car companies [1]. Model S/X sales are basically gone. Their marke…
Both the "n% of new cars are Teslas" and the "instant n% drop in Tesla sales" news stories are red herrings. They were both artificially caused by where Tesla allocated their production.
The only signal you can extract from this data is basically that the demand for Teslas well exceeds the company's capability to manufacture them, as whichever country or region they allocate more of their production towards will see a corresponding sales spike. This is mildly positive, but given how long it takes to expand production, I still don't think you can justify the share price on this. Right now, if Tesla had much more cars available, they'd be able to sell them. However, by the time they have ramped up production to match the demand, competitors might have something that matches them.