With more and more "nativish" APIs being added to HTML5 (like the whole suite of mobile device APIs coming with Firefox OS), browsers are becoming functionally more and more similar to operating systems, just that the design is terrible for an OS. Unless browser design is revolutionized in and out, we will have to keep making compromises like this one. We need to integrate Web capabilities within the OS, not the other way round. That said, I'm off to play Bomberman now.