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DVDs, Blueray or cable modems can't instantly change their physical limitations and will soon deprecated imho. Much to the contrary of the internet and the web.
I agree that by sheer numbers your concern about wrong concerns is valid. And treating those as lost causes an only think about Mozialla and EME covers a narrow view of the actual situation, but it is forsighted at the same time.
Also, what you ultimately say is most important: don't vote for DRM - especially not with your wallet!