I am unworried about future DRM schemes, no longer how draconian they seem. The motivation to crack them is huge -- the first ones to do so will be vaulted to cult hero status among the crackers and script kiddies.
In other words, there is about 10 orders of magnitude MORE creative brainpower waiting to be unleashed against any mainstream DRM than will be used to create it. And we all know it's easier to destroy than create.
Most likely the weaknesses will once again be in key distribution. The cyptography algorithms are likely sound and secure, but the storage and transmission of keys, not so much.
Plus I'm sure some genius will figure out how to scan the video frame buffer at 60 frames/sec reliably and simply save a copy of any protected video stream to be encoded/transmited later.