Could Google dominate the browser market? Sure. And soft drinks, too. But why should they?
Controlling the high carbohydrate industry (canned Google - hear the gulp) might have an unhealthy impact on the physical state of their programmers.
Driving Microsoft into browser oblivion would be even more counterproductive.
The G point isn’t being a software merchant but running a highly successfull ad-based services business.
Dominating the browser markt would be the trophy wife gone burden. But pushing a strictly giveaway market into a frenzy of competion leads to better browsers.
Better browsers mean richer experiences. And who knows more about richness?