None of what you describe is disloyalty in any egregious or intentional sense, but rather side effects of bigger decisions.
Apple’s dealings with CompUSA (you’re really reaching into the distant past here) had to do with increasing Apple’s retail presence at a time when the company was a hair’s breadth from bankruptcy. Independent Apple resellers weren’t getting it done, and the company had to do something else. CompUSA didn’t do much for Apple, either, by the way. This is why we now have Apple Stores, and why Apple’s retail presence at Best Buy, Wal-Mart, and Target is best described as limited participation.
Apple’s shunning of Flash is a cumulative consequence of embracing H.264 a few years ago. You can’t promote H.264 as a one-size-fits-all solution for digital video (including web video) and then turn around and say Flash is okay. There’s also the matter of Flash being notoriously insecure and unstable…
Microsoft never saved Apple’s bacon. What are you talking about? The lawsuit that Apple won? The cash infusion was nice, but it was hardly life and death for their bottom line.
The behavior you’re describing—intentional disloyalty and betrayal—would best be applied to some of Microsoft’s actions. Remember Playsforsure, Microsoft’s silly attempt to semi-standardize the segments of the MP3 player market that the iPod didn’t already dominate? Manufacturers got on board with that, and then a few months later, Microsoft stabbed them in the back by canceling the program and releasing the Zune. And I’d imagine the pre-iPhone smartphone manufacturers were very annoyed with the overall stagnation of Windows Mobile, especially Windows Phone 7’s nearly two year delay. It’s a good thing Android came along when it did, otherwise smartphone makers would have had nothing to sell in response to the iPhone.
Here we go again... Apple did not “save Apple’s bacon”, contrary to what some like to post. MS bought stock in Apple, which was soon “cashed out”.
Apple did hammer some of the smaller independent Apple dealers, though what was interesting about that whole thing - some stayed in business, with a few even surviving to this day.
Adobe, on the other hand, owes its existence to Apple, as the primary market for their software was the Macintosh.
Apple still represents a sizable portion of Adobe’s customer base (though less-so than in previous years). I firmly believe the Adobe/Apple “pissing contest” has been festering far longer than it has been in the public eye. I do know that Adobe was rather miffed when Apple released iPhoto as part of their “free” suite of software included on new machines (though it really didn’t directly compete with any of Adobe’s products). Then the release of Aperture, Adobe saw that as another “shot across the bow”, though it really is not in the same league with PS.
Then - the biggest was Apple decision to jettison the Motorola line of processors (the PowerPC lineage) - moving to the Intel family. This created some code issues and a lot of work for Adobe, if they were going to write native code. Adobe chose to drag their feet - causing Apple users of the later version of PS to get pretty upset (I know several of them). There was no begging by Apple to continue CS -
Flash, for all its “glitter”, sucks. Period. Neat idea, very poor and buggy implementation - Jobs was 100% correct in his blasting of it, especially in regards to iPhone/iOS.