That's self-defeatist. You mentioned IE downthread; IE is not the dominant browser anymore, and the reason for that is not just that MS stagnated, but that it was challenged vigorously by competitors that exploited new opportunities better. This is one such opportunity.
Chrome was better than IE, but it won out not because of technical capabilities but through Google's constant and ruthless exploitation of its web properties and operating systems. That already happens on iOS, and I'm sure a Google SVP reading this ruling just started a project to intensify it.
Firefox and Opera browsers could run Google apps just fine. Remember the days when Firefox and Opera got a cut down version of gmail, but if you changed the user agent on the browser to chrome it worked just fine.
FF took ages to come to mobile. Opera actually became pretty popular in Asia, precisely because they exploited well the move to mobile, and was screwed only by stupid commercial manoeuvers.