The Commodore 64DX/Commodore 65
In 1989, Commodore began an endeavor which was way overdue. The creation of a near Amiga-quality computer that is 8-bit in spirit, compatible with the popular Commodore 64 (through an emulation mode), and containing a built in disk drive. Assuming that the price range could have been set below $499, and assuming that this project had been done back in 1985 instead of 1989-1991, I believe this would have been an big seller for Commodore, and would have breathed life into them which would have extended CBM beyond 1994.I never knew they tried to create the Commodore 65. Fascinating. There's even an emulator for it.