Functionality of your PC is also there 'because of physics'. You paid for the RAM, CPU, and electricity to run it. There is a lot of software in cars and ECUs.

Functionality of your PC is also there 'because of physics'. You paid for the RAM, CPU, and electricity to run it. There is a lot of software in cars and ECUs. The mapping and tuning industry exists because there is a lot of knowledge and expertise to extract the most out of the 'physics'. There could be an argument for open source ECU mapping tables and other software. But, the reason is the same as reasons for OSS, not that the customer has paid for the 'physics' that already exists.