My point is that Commodore made little effort to migrate C64 users and devlopers.
Think if Commodore in say 1987 came out with a computer that had a solid C64 mode, VIC-II and SID based chipset with something like a 65C816 CPU that run close to all C64 software flawlessly and you could plug in common C64 peripherals.
Outside of the C64 mode your running Amiga Dos and possiblity Workbench, your can plug in common Amiga peripherals, use Amiga formated disks, past C64 compatibility the chipset aims towards Amiga compatibility.
The aim wouldn't be to make this computer run Amiga software but for the Amiga to run its, so C64 users could use it as a springboard onto the Amiga.