Well, from a business point of view it makes sense for them to assimilate (see Hotelling's law[0]) As a user I am unhappy about their decision. For me, the who

Well, from a business point of view it makes sense for them to assimilate (see Hotelling's law[0]) As a user I am unhappy about their decision. For me, the whole point of the existence of Firefox is the freedom to customize the browser in whatever way I want to. They shouldn't change that. If they really think that all their users are stupid then perhaps they could display a special warning when a "dangerous" piece of software (i.e one that uses XUL) is about to be installed. [0] https://en.wikipedia.org/wiki/Hotelling%27s_law https://en.wikipedia.org/wiki/Hotelling%27s_law