The difference with Ferrari is that if you're a real Ferrari buyer, you will want to be a valued customer so you can have a shot at buying another (new) Ferrari in the future. As there are more customers than cars, always now, Ferrari can be selective in who they sell to. And with exotic cars now being mostly appreciating assets, it really is a privilege to be able to buy one new.

Tesla is a very different story. While their new models are in higher demand than supply, they are not appreciating assets. And Tesla does not have a "great automotive history" as Ferrari does. It's quite possible that in 20 years, Tesla will be gone or on par with a typical car company in terms of brand value. There may be another hot electric mfg which produces the new models that people want. In fact, that is likely to be the case within 10 years.