Over the years, I've seen many default programs be replaced by the user selecting Open With...Well, they would have had to keep IE their default browser if MS had been allowed to have its way. You see the benefits now of government regulation?
I do it on my Mac. I usually prefer a PDF open in Preview to Adobe Reader because it's faster to open and doesnt nag with offers. It's not exactly hard in either system to choose who app opens a file type.
But a default browser is nothing like the things most people here are advocating. Nothing.
Funny how people are all for government regulation yet are happy to turn a blind eye to copyright ownership on game ROMS for emulators they want to run. Seems regulation is only beneficial when it works in your favour