What people don't get is that EME sets a strange precedent in the history of HTML. Web browsers have always been very hackable. HTTP meant you could always look at the traffic being exchanged. And because there was little point in obscuring anything, web browsers allowed you to look into and modify everything: - view/modify document source - view/modify DOM - debug script - and so on This is how CSS was defined too.…
HTML have always had plugins too... this ends that. Think of EME as a slightly better sandboxed plugin with a single very small purposes... As oppose to the security horrors from Flash
The single very small purpose will soon enough be worked around, messed with and extended to do more than it was ever "supposed" to - just look at JavaScript.