Because your laptop cannot have Netflix, or a DRM enabled browser?

You skipped Ni-MH there, that was major for not having the memory problems of Ni-Cd. We still use those in AA and AAA rechargeable batteries.

Or it’s equipment obtained via a third party (the same way the scape sanctions)…

You are missing the point. Open source hardware is about the design and drivers for the hardware being open. This means that when you buy a component you get full specs and the source code to make it run. That way you are not ruining windows 3.1 in 2024 because the company that created your train software does not update it and you can’t legally replace it (this is true right now).