I think most people miss the point here. The biggest problem for alternative browsers is that is very hard to grow into the market of people that are ignorant of what browser they use, they use click the blue e. This is the current situation.
Firefox sees it now, they are not growing at anywhere close to the rate they used to.
And there is no doubt that bundling IE with Windows is exploiting a monopolistic position on the OS for their own web strategy. The US justice department saw it, but they didn't go far enough, and EU sees it. It doesn't matter what browser people decide to use _when they have a choice_, but it's important that they actually HAVE a choice and can make some decision on their own as to what they want to use.
This is not just about Opera, but all alternative browsers on a leveled playing field. It's not that right now, as it is with most any other application type. It should be, and that's the main point.