In Windows XP the "set default programs" control panel had a one-click "non-microsoft" setting that would change all default programs to your installed alternatives. It seems like the effects of their 90s antitrust trial seem to be wearing off.
Many here would argue they have less of a monopoly than ever. Even as someone who thinks Windows does and will continue to dominate the desktop for at least another decade, I find that hard to disagree with given the mass migration of users from desktop to mobile.
