Whenever I read about the US antitrust case against Microsoft I have to laugh. The focus on Microsoft has always seemed silly to me, with Microsoft simply being the most successful company at utilizing a critically flawed technology law regime which creates an anti-competitive environment. The "Evil Empire" isn't Microsoft, but the US government and governments which follow their "lead".
Some of the key US created problems? Software patents and laws which disallow citizens from making their own software choices such as anti-circumvention, broadcast flag, mandatory watermark detections, and various harmful attempts to "close the analog hole". With the USTR/USPTO pushing these very bad ideas worldwide this "evil empire" is causing harm not only to the US domestic economy but the global economy.
These laws do not work in the way intended as they do not provide incentive for innovation (information/mental process patents) or reduce copyright infringements (the various technology mandates meant to disallow private citizens from owning/controlling their own IT). Both sets of techniques cause considerable anti-competative harm to the global marketplace, creating all the problems we see with companies like Microsoft.
Governments suing companies like Microsoft without fixing the underlying technology law are simply punishing companies for being successful within the flawed rules that the government created. Even if Microsoft was completely broken up, all we would have accomplished is a name-change given any other company can become successful within those flawed rules and harm the economy.