Didn't realize this, but Tesla uses open software on all its systems, which means that ANYONE can copy the Tesla systems....yet no one does! The question is why?
The answer is in the question, if a car company uses open software there is a limit to the patent it can then use to protect its technology. In a sense, what Tesla gives is the right to other car companies to do like them, but that falls outside of these companies' comfort zone.
Tesla has been hugely innovative for example the "rear assembly" on the Tesla 3 which used to have 15 different parts (that needed to be assembled), is now only one part. That cuts costs!
However, what does that do to repair costs? No one knows and no one is asking the question
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