Sony to blame tube sites too?

[Toby]

There is no viable solution. The side effects of anything that would completely lock it down would be worse than the theft itself.

A few are having decent success by only providing video in a streaming format. That doesn't really prevent theft, it just makes it more difficult to acquire a file that can then be uploaded, so the "file sharers" move to easier targets. It only works so long as there are enough easier targets.