I am not sure the digital revolution will make piracy harder. If music history is a lesson, it will make it easier.
When the original is analogue any analogue copy will introduce a degradation in quality. Once you have a digital copy (either of an analogue original, or of a digital original) each copy is identical to the original, a pirate paradise.
With videotape I could record an Opera broadcast on TV and see it, but the video and audio quality were not the same as the original TV show.
Now I can record an Opera broadcast on digital TV on a digital medium and see it at exactly the same quality as before. I can also make as many copies as I want without degradation. It really is a very near DVD convenience at no cost. I expect this new technology will deeply affect DVD sales in the long run.
It's probably a child play to record "on the fly" the cinema theatre satellite transmission. Even if it is encrypted somehow during transmission it must be decrypted before projecting the image on the screen. That image sent to the projector is a digital unencrypted film and can be recorded presumably without many difficulties.
In my opinion, the transition to digital will certainly make the preservation of "secrecy" about a new release easier but, in the long run, will heavily damage the "long tail" of cinema revenues (especially DVDs, and possibly even TV broadcasts).
Movies producers might go back to film so that they can postpone the piracy risk to the DVD release phase.