@ohim: Loom said it well, monopolies have special, just-for-them regulations to ensure a form of free market (this is what 'capitalism' is about, see - 'communism' is the ultimate form of monopoly: a state monopoly; go read a good book on Economy 101, and you'll see here that the EC actually enforce capitalism, while the US High Court didn't - have a look at a complete definition of 'lobbies' or 'pressure groups in economy' while you're at it).
Ferrari doesn't have a monopoly on sports cars; moreover, a browser isn't a required part to use a computer (think 'server'), so your analogy would work best this way:
If Ferrari had a monopoly on sports cars and forced a broken down GPS bolted on the dashboard on the buyer, someone would surely complain about it, and want it removed and replaced with a working GPS of his own choice; the answer that most posters seem to favor here is that since it's a Ferrari GPS, and that they know better, you should use it, and keep it there; you can still get another GPS that you'll stick on the windshield (the original broken GPS would still shout "wrong way - wrong way - wrong way" all the time, because it can't be unplugged nor turned off).
Would it feel wrong for, say, TomTom to file a complaint to the EC for monopoly abuse? For Ferrari owners to complain that they paid good money for a sports car, and can't even unplug a non-essential component (that doesn't even work right) to put theirs in its place?
About other built-in elements: interestingly, one used to be able to remove MS notepad, calculator and media player from Windows to put their own in place; this is no longer possible.