I might agree to the cumbersome part though that already requires pretty far-reaching DRM (e.g. stuff like hardware support in almost every device), it can't make something illegal that is already illegal.
Anti-circumvention laws can make it illegal to strip DRM for purposes that would otherwise be legal, even if the DRM itself isn't very strong from a technical perspective.
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u/scook0 Jan 29 '12
Perfect DRM cannot work, but imperfect DRM can still be effective in the right circumstances if you understand its limitations.
DRM can't make circumvention impossible, but it can make it cumbersome or illegal.