I didn't. I encouraged friends and family to ditch IE for Firefox and nowadays I encourage them to ditch Chrome for Firefox. I never cared that Chrome was a little faster for some time.
One person that only uses the (very old and underpowered computer) for mail and printing documents I helped install Linux (not Ubuntu ;)) and since then they are much happier, because it doesn't get slower with each security update and needs less maintenance help than with Windows.
You should probably start advising that they ditch Firefox for IceCat.
Antitrust entities bashed microsoft for shipping IE and look where that got us.
If anything, it's worth keeping in mind that volumes of regulations written for big corps may indeed force them to behave, but are an impediment for tiny companies to enter.
Corps like microsoft do call for regulations and copyright laws all the time, the have an army of lobbyists, they know that even without regulatory capture these extinguish competition.
Legislation and regulation are the only fixes for these practices. The EC have a lot of kettles in the fire here - on multiple fronts. I trust that, although it will take time, "fairness" will prevail.