Should we all expect Toyota to design their ECUs to be used as a NAS?
The situation is such that the legal owner of the device has less power over it, post-sale, than the company that made it.
That reason alone, the imbalance of power, should be enough to support abolishing those restrictions, preferably by law.
To be clear: this is something that should be beyond market forces, and it should apply to anything that is sold to consumers and can run code. The end goal should be that no user remain less powerful, in terms of code execution and access to content, than the manufacturer.