"my marketing department sucks....the other guy's marketing department doesn't suck...maybe i can sue them and call them a monopoly so that my crappy marketing department doesn't have to work harder"......there have been VERY VERY few true monopolies in modern history (check your zipper...does it say YKK on it? i bet it does) there are many companies who have a vast majority of their market share but how can you fault them for being good at what they do? they're in business to make money...if they're better at making money than the other bunch of yahoos...then so be it....
The monkey also answered this. Opera's advertising campaign, what there is of it, sucks. Do new users know about this "Firefox" thing, most do. Because their advertising and community is everywhere.Also, of course people can go and download another internet browser. Do all users know this? No. Do all users know there is a choice? No. Will ignorant users do this if/when they find out there is a choice? Possibly. Will this spur more innovation and better access to all websites by all browsers across the board? I certainly think so.
You can use FireFox to download MS updates. There are extensions that can do this, and websites dedicated to it. Google is their friend. While not a perfect solution, you can use IETab to do everything in FF that you need to do in IE. Its basically IE loaded in a FF shell, but it allows you to still use your FF addons like flashblock, adblock, and noscript.
IE is not the only program out there that resets to defaults when updated. Its probably not even the first software to do it.