The difference is that for DRM to be effective, it requires the DRM vendor to have full and exclusive control over some portion of your hardware. If this is not

The difference is that for DRM to be effective, it requires the DRM vendor to have full and exclusive control over some portion of your hardware. If this is not the case (and it should never be), it's breakable with resources akin to "one cracker and a Pentium IV". Crypto OTOH can be completely impractical to break. Plenty of codes around that would take even the NSA millions of years to crack, baring new mathematical or computing (e.g. quantum) breakthroughs.