I'm assuming I don't have to explain to you the sentiment over Microsoft's product base (consumer mainly) in the past 5-10 years in comparison to it's biggest competitor, Apple, right?
Apple is a single, targeted competitor to a fraction of Microsoft's business.
The XBox 360 is a great console, MS hardware is still top notch, Office is still Office and Exchange is still Exchange. Windows 7 has been widely well received, and IE 10 is on track to be the most compliant browser in the IE line.
Half (or more) of Microsoft's business, and far more of their profit, is two product lines: Windows, and Office.
They're also synergystically linked: if you're running on Windows, you're far more likely to want/need Office, and if you're using Office, you're far more likely to want Windows.
Crack either side of that diptych, and you've vastly undermined the business. Apple is attacking both. The OS through both its laptop and desktop (yes, you can still buy desktop Macs) offerings, but increasingly, mobile (iPhone, iPad, even iPod). Apple iWork is a competitor to Office, and some products (notably Keynote) are vastly superior to the Microsoft offerings.
Apple's not the only competition, of course. Google appear primed to take on more of the space as well (Google Apps, Android). And there's even Linux on the desktop. One of these years.
So you're suggesting some purchasers of Apple products are vapid enough (and monied enough) to buy them out of "goodwill" towards Apple? It's possible, of course an alternative is that you haven't a clue what you are talking about. I know which way I'd bet.
Ah, but that is one alternative! Now you'll have to excuse me, I'm off to buy a new MBP with the specs of the standard PC laptops of a few years ago for double the price, acting as a rational consumer.
I do not thing that buying something because you think it has a good brand (or you have goodwill towards the brand, however you want to phrase it), makes you vapid.
High end consumer products like Apple hardware most certainly have a certain fashion aspect which is important to remember when you considering why people make the purchase decisions that they do.
While that may be something that you do not value when purchasing hardware and gadgets (I know I do not value it highly at all either), there is certainly nothing fundamentally wrong with those that think otherwise.
Those are wholly related. Were the quality of Apple's hardware or software to decline my goodwill towards them would take an immediate drop. The one and only reason that I use their things because I find those things, and the support behind them, to be the highest quality.
I am not sure how that is relevant to be honest. Are you saying that there brand doesn't matter, or that it is healthy because their products have found success due to technical achievements?