I agree that would be a problem, but I understand there would be a way to implement the current proposal without requiring a browser to be closed source. https

I agree that would be a problem, but I understand there would be a way to implement the current proposal without requiring a browser to be closed source. https://news.ycombinator.com/item?id=5232033 https://news.ycombinator.com/item?id=5232033 https://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/encrypted-media.html https://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-med... It's not a perfect method, it would require some additional potentially closed-source OS-level software to be installed for the browser to interact with. But people who don't want it don't have to get it, and the browser can implement the standard without becoming closed-source.