Forking the technologies that underpin the platform of the web I think tackles the wrong problem. The problem I see facing the open web is the consolidation of users and services into single platforms. Facebook is an easy example. You can build a Facebook alternative with any technology you like, it would take a completely different force to change the social paradigm around it.

The great thing about the open web that you rightly mention is still kicking, is that it's full of places and services that are driven by humans and passionate communities. Nothing about EME stops those communities existing, but nothing about those communities is going to stop Netflix being the most popular platform and using EME/DRM.

If you will excuse my fluffy analogy, the web is a farmers market that has a shopping mall being built right next door. What I think would help the web, is educating people that it's better to go to the farmers market so that we can support entrepreneurial and local community endeavors rather than stuffing corporate coffers and enabling that consolidation.