The US DOJ under the Bush Administration totally blew the Antitrust Decision with Microsoft. But that was the first sign of an endemic incompetence. Now the EU Commission in requiring Microsoft to preload Windows 7 with the Safari, Mozilla, Google, and Opera browsers as well as IE for a user option of choice (much as browser vendors provide a choice of search engines for users) is simple and effective to dulling the competitive advantage that IE has on Windows desktops as the exclusive choice in Windows XP and Windows Vista.
This is simple and effective deterrent to a monpoly being spread by infection. Hope the the new Obama DOJ gets on this right away.