Have they really, though? I mean, a Maserati is also priced very highly. Certainly much higher than what is "truly competitive" for a luxury vehicle. But I don't think anyone would call them a monopoly. Likewise, Tesla is selling a unique product within a class, and some people are willing to pay more for that product. In other words, they have a product with a competitive advantage, and that allows them to price higher than the competition. This is healthy and normal elastic demand. I mean, price was a big reason the Model 3 presold in a week about three times the entire Model S volume.
I have no real issue with Tesla from a competitive perspective. I'm simply making two fairly seperate points, that monopolies are always bad, and Tesla has accrued many more benefits from the state than penalties, on account of its size.