Tesla is the only company to have high-margin mass-market EVs.

True, but their margins only exist because of protectionist US laws (i.e. 100% tariff on Chinese competitors).

What does that have to do with margins?

Not many people would pay $62K for a Tesla Model Y if they could get a BYD Sealion for $37K.

Do you know what 'margins' means?

And even in markets where BYD Sealion is sold - including China - Tesla Model Y outsells it!