Topic on Talk:Digital rights management (DRM)
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This is the last thread (which at least I'm aware/participated) where AFAIK my clear-cut* position eventually won.
Nobody bothered to actually implement guidelines though, you are right.
You could try to experiment yourself for an editing guide change, if you have spare time.
And from that, to getting to improve actual DRM article, the step is short.
*and not as dumb that even the "purchase paywall" could classify as DRM, yes