> What if I, the owner of Standard Oil, don't want my oil in inferior cars?
That makes no sense, either as a hypothetical or a historical reference.
> Programmable hardware and software are obviously always severable. This is not up for debate, but is a basic fact.
That's a fact you made up that sounds "truthy". It's an opinion. You're entitled to your opinion, but you're not entitled to make up your own facts. And yeah, it’s up for debate. You know how? Because people have been debating this for decades.
Think about all the gazillion pieces of hardware out there that have dedicated control software that works closely in tandem with the hardware. Practically nobody is clamoring for the absolute freedom to replace the hardware in the stability control systems for for their vehicles or the autopilot systems in airplanes.
> You can always sell the product you want. That doesn't mean you have the right to control how the owner uses it.
You must be unfamiliar with this thing called "the law." You don't "own" the software component of an object when it's purchased. What you do "own" is a limited transferable license to use it, which conveys with the physical object. Same with all forms of physical prerecorded media.
Perhaps you are arguing for how something should be. And that's fine, but that's different from what is.