Apple could ship an Apple TV with a decent M3 chip inside made for gaming... with a controller, if they bother to get some exclusives it would be better than xbox, pretty easily.
They have the tech.
Consoles are already closed, just like the phones, so clients could not "revolt"
Another option would be Steam OS based "consoles" like the steam deck, two main options:
1 - Build your box and install the OS
2 - Pre-built boxes (like the steam deck, but console performance ballpark)
Having semi open consoles would be great actually!