I feel like that's an old way of thinking. If websites are too grow up and become first class applications, and advancements in Chrome and Firefox are paving that way, we want the browser to become a very thin runtime that doesn't impose any behaviors of its own. It should be mostly transparent to the user that they are in a browser. The fact that different browsers use different shortcuts makes that all the more important, that browser shortcuts need to be invoked in other ways that won't conflict.