[GuB-42]

Sometime it is simpler and cheaper to just lock the switch. It depends on how the manufacturing is done. In some cases (maybe not with Tesla) the feature is there but it may be defective. Sometimes it is worth making a completely different "cheap" version.

In any case, it shouldn't change anything for the end user, hardware or software, you pay a premium for premium features. And even if it involves actual hardware, it will cost you a lot more than what the part is worth. That's how manufacturers target both the premium and budget market with the same product. I think it benefits most people in the end, especially on the "cheap" side since people can get something they wouldn't be able to afford at all otherwise, at the cost of a bit of luxury.

Now, you can get smart, buy the cheap version and hack the software, or install much cheaper third party hardware. Same idea as ink refills for printers, or ad-blocking ad-supported websites. Often, that's you right, but don't expect the manufacturer to play along, you are on your own.