Apple To IBM: Toodiloo
As somebody who still has a Mac Classic (the BlogDog helped me buy it in 1991) with a 68000 processor I can see the point here that with each change in architecture Apple loses market share.

In the mid-1980s, the Mac captured as much as 10 percent of the overall PC market, he said. But when Apple switched from Motorola 68000 processors to PowerPC chips, the Mac's share dropped to below 5 percent. When the Mac's operating system later changed to OS X, it fell to below 3 percent.

Now somebody please help me out here. Apple still makes a better machine, right? I just don't understand what caused the current dominance of the market by WINTEL (Microsoft and Intel). Was it all marketing or just a ruinous combination of bad business decisions that produced the present situation. Maybe this is simply one of those questions with no good answer. Life can be like that sometimes.