I tend to agree with the overarching message of this article. While I don’t feel HTML5-based gaming media has come anywhere close to what it can potentially be, I think there are a ton of people working to establish just that.
I love the idea of gaming being based in a browser, but I can’t quite put my finger on why. Maybe it’s purely due to the openness of it, maybe it’s the fact that you don’t need to physically install anything (except a browser) to make the most of it. I’m enamored by the idea of HTML5 being a primary gaming environment though.