This is actually a battle cry for Mozilla. The desktop GUI paradigm is done for, it's at the end of the line. Once desktops die off in popularity there will be no growth for web browsers like Firefox unless they own the whole stack like Apple and Google have successfully done, and Microsoft and RIM are attempting to do. Mozilla is developing Boot2Gecko because without expanding into a full mobile platform Mozilla is in a really tough spot in the smartphone/tablet markets. Predictions for the future put Apple/Safari at 45% marketshare, Google/Android at 54% marketshare, and the 1% scraps left over for RIM, Microsoft and now Mozilla.

Mozilla will to have sell an awful lot of these phones for their organization to be viable in the future.