I am surprized they haven't yet. The f$%ing hasn't moved for a decade and still way down its high. What a loser! And they had the technology from its balls. Look what happened to GOOGLE by a couple of inexperienced youngesters, look at APPLE and how a sick CEO pushed it to new highs and made the darling of the street, look at RIMM, look at HP, look at IBM, what is this f%^&ing Ballmar doing and why is the board not moving?
Part of the trouble is the question "where do you go after you have a monopoly"? Admittedly the profits are great, but any attempt to use monopoly money to buy dominance in other industries is going to be blocked by forty dozen different regulatory agencies worldwide. Even while they claim to accept that monopolies are not necessarily illegal, the presumption of guilt remains. I've come to believe we should, under the realization that any moron can run a monopoly successfully, limit executive pay in any company which controls 60% or more of any market. Oh, we could be reasonable, say one million dollars a year for the CEO, but still manage to drive Americans "best and brightest", into greener fields where they could then proceed to create more American global monopolies and incidentally, more American jobs. Additionally it would thus self limit the growth of the total market cap of the corporation as division would be rapidly spun off by executives to limit their work and to allow them to rather quickly move into unregulated pay corporations, as CEOs. As to how this would apply to Microsoft, it might be broken into five corporations consisting of operating systems, office software, gaming machines and software, internet operations and a hardware company with mice and keyboards among others. Ballmer might do very well in the gaming segment leveraging the X-box and Halo franchises. Each corporation would not only be debt free, but also have say a billion dollars or so of cash, thus making them instant market power houses able to withstand economic downturns. The two monopoly segments would become reit like, paying out huge dividends which they would grow solely by buying back stock while unfettered by demands from money loosing segments. The others could concentrate on "grow baby grow" growth, using mergers and the same questionable business practices that allowed MS 3.1 to take over the world. For an example of how this might play out, one should look at the breakup of the original Ma Bell where it was estimated the spin offs were in total, worth more than ten times what the original company was worth, ten years after the breakup. Frankly, Microsoft is "worth more money dead, than alive." Lets kill the beast.