I'm not sure I understand Mark Cuban's position in this post:
I recognize that it puts Google in a tough position. In fact, it could also be considered hypocritical on my part because I feel more comfortable with a user off the street buying and owning a DRM free copy of any or all of our movies or shows than I feel with Google holding DRM free copies of my content in order to protect it from pirated uploads. I dont have a good reason, but I don't trust Google with a copy of the worlds content any more than I would trust MicroSoft , IBM of the 1980s or any corporate SuperPower.
Whether or not a "user off the street" has any particular moral compunctions against sharing a file en masse is of course a crap shoot. The "corporate SuperPower"'s have very specific legal interests in recognizing and protecting copyright. They're the ones with the deepest pockets, and are far more likely to be (meaningfully) sued.
Cuban sometimes arrives at some odd positions...