> Sony showed up and showed how to do it and that was it.

The annoying thing is that Sony simply cannot do software. I love my A7S2, the hardware is excellent even years past its release, but the menus are confusing as fuck, why does it even ship with WiFi with the option to connect it to an existing network when their own software can't detect it there, or why does it need yet another piece of proprietary software to be used as a webcam instead of just implementing USB UVC...