Microsoft business practices are indeed shady, but they work... which is much more than I can say about most of the linux community. The commercial UNIX and UNIX clones are just as greedy, and just as shady as Microsoft, although in a different way. You will find this with any business, even the mom and pops. The reason Microsoft was hit so hard was because of its rapid growth in the consumer field. They played dirty tricks just like SCO, HP, IBM, etc, but they got all the media attention. But I would rather Microsoft be in consumer control today than Linux or Apple. If linux was the dominant market, we would barely be driving 300MHz CPUs, and software would take four hours to configure just to install. If Apple was in charge, we would be charged $6000 for a moderately performing PC, because we'd be paying so much for shine and smugness.
Yeah, we all have our preferences, but the reason Microsoft is still afloat is because their products work for the most people. A good balance between productivity and ease of use. Face it folks, Microsoft got it right. As much as you would zealously defend your alternate OS's (which may work for you), you have to acknowledge that MS got to the top not only by shooting opponents out of the sky, but by making sure to never allow them to overcome by making sure their software was much better than the alternatives that did pose a threat. That works for me, and in the end, it's all about me.