My all-time favourite phrase to enter into case notes?
"massive pyrotechnic failure"
Have used it twice, at different workplaces.
I don't think that is really the main the reason. If Microsoft wants to defend a charge of vicarious (i.e. they assisted others) infringement then they need only point to Sony Corp. of America v. Universal City Studios, Inc., 464 U.S. 417 (1984) [wikipedia.org] aka "the Betamax case" and make the Res Ipsa Loquitur [wikipedia.org] (the matter speaks for itself) case that the Windows OS has "substantial non-infringing uses".
Great. Now I need a new fuse for my sarcasm-o-meter.
"Been through Hell? Whaddya bring back for me?" -- A. Brilliant