There is a little more. I believe that in every firstworld country, there are legislative mandates that car makers must make proprietary information required f

There is a little more. I believe that in every firstworld country, there are legislative mandates that car makers must make proprietary information required for servicing their products available. This is colloquially known in the USA as 'right to repair' and the idea is to prevent a situation where independent mechanics, or owners themselves, will be unable to repair vehicles because the information and tools to do so are held only by the manufacturer or his agent (dealer.) Some other carmakers have apparently decided that leaked/extracted information or software is not really a big problem for them. I know that one carmaker that I have worked with views that situation as a sales driver for car parts, and would rather be on friendly terms with its customers anyway. Ford Motor Company, on the other hand, simply refuses to support old cars. They seem to have a very efficient system to landfill old parts inventory as soon as they are no longer legally required to support the cars that those parts apply to. While other carmakers shift production of parts for old cars to secondary vendors, I have not seen any examples of Ford doing this.