I think everyone is big fan of Amiga classic here and rightly so.
But there were several problems whit it.
CDTV: when it came out no one know what a CDROM was.
Amiga 600 was supposed to be a cut down version of Amiga500, but in the end it was not.
Commodore 65 was developed at same time as the A600, and later the C65 was canceled, but it might have delayed to development of A1200, if A1200 head come out in 1991 instead of 1992 it might made a difference.
Amiga 1200 did have too low specifications, it did not have CDROM when CD was finally becoming popular, it only came whit 2MB of ram, PC's at the time came whit 4MB, and CPU was too slow even then, it should have come as hard drive as default, It did have AGA, HAM8, put just on year after AGA, PC's where showing up whit true color graphics as standard.
CD32, it did have hardware accelerated video, but PC's at the time where able to playback video by raw CPU power, it was a toy.
What was even worst was that Zorro-III slots where not PCI compatible, it was not possible to get cheap hardware upgrades for Amiga3000/4000. Amiga1200 whit it none standard trap door, expansion slot, made it impossible to use standard upgrades.
Trying to enter MSDOS / PC market was also big mistake, it was not the software that was the issue, it was the price tag, and too many competitors pulled the price down.
They failed also in marketing; they let less advanced PC/MSDOS dealers spared lies, PC dealers where telling people that multitasking was unnecessary and useless and those they needed an IBM compatible PC in their home office. Did you know that WordPerefct existed for Amiga?
Commodore painted there self into a corner.
How knows what might have been if they done things differently, but they did not, and so is the history written. Blaming Microsoft for Commodores mistakes rally does not help.
On another hand, Microsoft did cause problems by always trying to monopolize on document format, image formats, and video formats, but it was not the only company to do this Apple did the same whit there QuickTime format.
Business is like animal kingdom, be eaten or pray on weaker ones, only the strongest Business survives, it's all about coming up whit the best strategies to adopt to the environment.