This was a faustian bargain.
Now that DRM is in the browser, it's going to be pushed further, as with this proposal. It forced Firefox to compromise on their values of open-source in order to stay relevant. Streaming movies are still getting copied the same day.
We know from experience with the gaming and music industry that what protects the publishers is to provide a convenient platform, with reasonable prices. And of course the legal system to take down pirate websites.