You're financially tied to them. You've taken the Danegeld, so to speak. You already use their junky software, because you're paid to.
MS only threatens the folks who refuse to take their money, who refuse to be bought off, insist on keeping their independence. It's always odd to hear MS folks say that MS never forced them to do anything. Of course not, because you're already doing what they want you to do. You're already on their plantation. They're already lining your pockets. They don't have to threaten you to use their software, you already do, it's what you get paid for. It's the "independent" thinkers and businesses -- the ones that wish to use the best solutions, regardless of company -- on whom MS unleashes it's illegal antics.
Just like the Clinton's never had to "force" James Carville to say that the Clinton's did nothing wrong.
I use it because my customers ask for it. Are they paid off, too? Do you really believe that no one really wants Microsoft products, but that they are all forced somehow by Microsoft to do so? When I walk into CompUSA and see the hundreds of Windows products on the shelves, are the producing companies forced to produce Windows products? When millions of people use Windows, are they are all somehow forced to do so? When the Defense Department buys and asks for Microsoft based solutions, are they are too weak to defend themselves against Microsoft?
Is Microsoft so crappy that leading networks who use their products, including Microsoft, somehow defying the odds? I wonder how they do it??
I suggest that it is not the products that have failed you, but that you have failed to understand and properly use the products. I am not trying to get personal here, but usually that is the case. You may not have succeeded at using Microsoft products, but I have, and millions of others have, too.
I have never worked on or managed a solution that failed because a Microsoft product failed to perform, and I have produced a variety of large and small systems, mostly using Microsoft products and technologies. (UNIX, MVS, and VMS, too, but don't tell my friends. ;>)