I'll focus on one word:
I think what Enron has done to Business, to the market, to confidence and to those who lost much of their assets, is far worse than what MS is being accused of here. (My emphasis)
The modern stock market is a combination Ponzi/pyramid scheme/casino where the whole thing is rigged. It all works on confidence. As I said here recently, the only real asset of a large corporation is confidence in their brand. As long as they maintain that they keep making money[1]; as soon as they lose it they are finished.
The only reason Microsoft still has the confidence of the market is their monopoly position. It is literally a case of people believing there is no alternative: "Of course they're going to keep making money. Who else is anyone going to buy from?"
If a company without Microsoft's monopoly faced the same legal problems, their stock would have tanked by now, and Gates and Ballmer would probably be testifying in Congress.
[1] Or at least the corporate officers do. As we have all seen recently, you can claim profits you didn't make to inflate your stock price, knowing your compensation is tied more to stock price than dividend.