> Freemium wouldn't work. There will be unofficial builds available with this kind of stuff removed available for free within hours of the official release.
But how is "Firefox with ads" going to work then?
Firefox is still open source after all. Someone will remove the bit of code enabling ads, gives it a fancy new name and eventually a critical mass will switch to this browser.
Firefox already has market share and momentum; a fork won't hurt it that much unless it gives a lot of improvements.
"Firefox with ads" lets one turn off the ads. The control offered is the same when you're allowed to download a fork. I don't see why a fork would hurt Fx so much if it just turns a feature off by default -- a feature that Firefox lets you turn off anyway.