I think Mozilla is paid by Google when somebody uses the search from Firefox's default home page. So when somebody uses IE instead of FF, Mozilla "loses" money.
Internet Explorer was integrated into the Windows OS. You can not, not have IE on your Windows computer. You can delete all desktop icons, and links to IE... but it's there buried in the Windows folder. But you know what, if you don't like how Microsoft and their near Monopoly on OS installed on computers... you can just sue them in the EU. But maybe there is some unfair practices going on with Microsoft. Look at what Intel was fined for, again by the EU. Intel and Microsoft are somewhat unique, they have a near monopoly on what they do. Steam launches IE on my computer when I click links, and it annoys the hell outta me that it doesn't use FF, my default browser.
The vast majority of people using computers don't know how to use them properly. Is that Microsoft's fault? What the EU should do in my Enraged Opinion is make the manufactures install a few browsers, there's plenty of HD space, and/or pay a programmer to make the ballot ( or who said it was entirely ineffective could try to do better). Better yet! Make a law that says there can be no fine, fees, or retaliation (read: price increases) from Microsoft to install a competitors program on a Windows PC for OEMS. I like that idea, you could select your web browser like you do other options from Dell or HP customized PCs. But does that mean that the OEMs have to support whatever browser you have installed just like they do support for Windows?
Last point, my boss is tech savvy, but not up to date on all technologies. He has FF installed and it's his default browser, but he uses IE everyday to view his homepage because the link is on the desktop. Now, he didn't WANT FF installed on the comp, but when there was a scare about virus' and malware hiding in picture files I got him to install it, and slowly he's using FF more and more. Old habits die hard for a lot of people, this will not kill IE's browser market share domination. The foundation is laid for FF, Opera, Chrome, hell even Safari, and all comers to take more and more market share from IE.