Moonlight is open source. Netflix could port the DRM if they wanted to; FreeBSD would not need to do it. by my read of the CC license they'd have to contribute that back to the project, but I'd guess they could then negotiate the licensing of the keys; keys are not code so I don't see any more problem with that than using your own keys in e.g. GnuPG.

So few people use *BSD as a desktop that the demand for it is not going to make it happen, however.