And webkit based browser is included on macosx and ios. In ios webkit is the only allowed web engine. If you consider this combined with Android is shipped with webkit as default you could say the situation is at least as bad as it was with ie6 in the market for mobile browsers.
I really hopes Microsoft and Mozilla continues develop there engines.
Hardly. Android, at least, lets you install alternative browsers to the integrated/chrome. And quite frankly, the integrated/chrome browser is a worthless piece of crap. The rendering layer on it is SO FRIKKING SLOW that you can't use it for most sites. Firefox on the other hand, which very suitably uses their own GECKO, absolutely flies. Android market shows it as "10,000,000+ downloads", which is the same as for chrome and opera.
I really wouldn't worry too much. Firefox is doing a great job and holding their own in mobile space.
Yeah, I was really suprised how quick firefox on android is, I recently switched to it. Scrolling in particular seems way better. however there are a lot of crappy sites out there that serve only webkit optimized code which can be really annoying when using it, and for some reason some sites don't serve it with a mobile layout at all, but do when I use a webkit browser.
At least on my slow "desire s" opera is faster than all of them.