Most of the time it’s not the hardware that needs to be open-sourced (i.e. CAD, Gerber PCB files, etc.) It’s mostly just that the hardware should use standard, open protocols. It would be nice to have the full PCB design so you could rewire things if something breaks. But, most of the time, it’s good enough if the device uses standard HTTP or standard Bluetooth, rather than something proprietary.
Most of the time it’s not the hardware that needs to be open-sourced (i.e. CAD, Gerber PCB files, etc.) It’s mostly just that the hardware should use standard, open protocols. It would be nice to have the full PCB design so you could rewire things if something breaks. But, most of the time, it’s good enough if the device uses standard HTTP or standard Bluetooth, rather than something proprietary.