I'm also not a big fan fancy browser demos. People have this fair speciation that anything in a browser will run well on their 5 year old laptop. This is basically true. Except for when you get into 3d content. There's also an expectation that things load relatively quickly. Rich games with tens to hundreds of Meg's of content do not load quickly. Then they continue to not load quickly everytime you go back to that page. (If not everytime, then sometimes, which is even worse)

I do agree that there should be a fast and easy way to experience VR, uh, experiences without having to download native installers for every one. I'm not sure what way that will be. I am extremely unsold on the browser being the solution. But if it works out then that'd be pretty nice.