Macs had cooperative multitasking since 1984. Windows 3.0 also had cooperative multitasking. It didn't need dos emulation and weird graphics hacks as it was built from the ground up rather than an add on hack for Windows. Mac II was color in 1987.
My point is Windows was a low grade hack until Windows 95 where it became a pseudo OS with more hacks upon hacks to get anything to work until XP came along and kicked the nasty model to the curb for all pcs