Competition from Apple and Linux (but mostly Apple) is the best thing to happen to Microsoft in a long time. No, the UI isn't perfect yet, the design decisions (for this beta) not always logical, but Windows is finally going somewhere amazing after many years of going no where. Because some of Microsoft's best products were great but went no where. Take the Zune and Windows Phone 7. People who own them love them, esp…
Another relevant point: antitrust oversight of Microsoft started in 1998 and ended 12 May 2011, and Microsoft clearly doesn't have a monopoly in PCs anymore. Imagine a world in which Apple was taken to court for including Mobile Safari on the iPhone, with talk of huge fines and company breakups. Consider having to make strategic decisions with those threats hanging over your head. Would we get Siri? Maybe adding Remi…
Despite the widespread perception that the antitrust investigation was ineffective, if you trace back to the beginnings of Microsoft's stagnation, you will find it happens exactly when they started getting sued for antitrust in the US and Europe, and similarly so too did their innovation stall. They kept on producing cool stuff out of their research labs but nearly none of it ever made it out. Regulatory concerns enormously biased them towards playing it safe, just doing incremental improvements and milking their cash cow instead of risking aggressively entering new markets and getting hauled into court for it. Even the rise of OSX can be traced to it as MS has been forced to license a great deal of technology (exchange, office formats, etc) to its most hated competitors under FRAND type terms.
So its kind of interesting that regulation may actually have been effective, just very slow to work, and also it is unclear whether it was in the ultimate interests of consumers or not (eg: years of stalled innovation that we are only now catching up on).