[softwarecreator]

Ill let you guess how old the engine for firefox is...

Yes, but very few people bothered to waste their time hacking into a browser that only a few would use.  And Netscape after 4.0 royally sucked, so Mozilla was pretty much forgotten.

Again, it comes to how widespread the use of the browser is.

[N3WBI3]

But a few minutes ago that was not your argument you said they only had a couple of years when in fact the engine is older than that of ie.