Didn't Apple IIs require a monitor vs a TV? The Apple joysticks were also different from the 9 pin Atari/C64 ones. But they weren't 'proprietary' as much as 'differnet and more expensive'.
Not just the joysticks. A useful Apple ][ system was double or triple the cost of a similarly capable C-64. Apples were great machines, but because of their timing and price they were considered business machines. At least until IBM changed the world.
