I've often wondered about the old "what if" scenario.
If Apple had managed to pull it off, and set up the right OEM agreements, the Mac could have become the defacto standard (this would have taken some help from Microsoft, who had volunteered to broker the deals with IBM clone manufacturers at the time).
If Mac had become the standard, they would have invested more in Copeland and probably pulled it off. Rather than using OS X now, we'd be using System 8 with a micro kernel, multi tasking & memory protection. NeXT would probably have gone bust by now, and Microsoft would be competing with Lotus to be leader in office productivity software. Apple would probably have stopped manufacturing hardware, and Dell would be the leading Mac developer!
By now, Netscape would have taken Apple to court for illegally commingling their Web browers Cyberdog (they would probably have paid big buck to a brand consultant to come up with a better name by now) with their operating system.
In this scenario, Apple's monopoly of desktop operating systems would be more complete than Microsoft's today, since Apple & Microsoft would be collaborating, Microsoft would not have developed Windows.
Since it's in my nature to support the underdog, I'd be a Linux user and anti-Apple! Shudder.