The odd thing about it all is it's the fact that 68k processors were the better processors that caused this mess in the first place. It was/is a price issue. x86 was/is cheap by comparison. It's why so few home pc owners use MIPS or even Alpha chips today.
Better means higher price. The best solution at the lowest cost will always win and makes the standard.
Amiga was a game machine when business machines ruled. Business machines became the standard for those that took work home. Amigas were the best graphics machines at the time, thus their popularity among gamers and video editors.
The reasons we love the machines are the reasons it faded out!
The day someone can produce a machine with the advantages the Amiga had at the time, at a cost comparable or less than PCs, will be the day the tide turns... Because NOW the home user dominates the market.