There is a good chance you’ve already watched the tretralogy “Everything is a Remix” by Kirby Ferguson.
The docu does a very good job at showing how new advances in technology, music and movies build on each others creative works, how our society as a whole benefits from this, and why our stubborn legal system can’t deal with it.
If you haven’t seen the series yet, here’s the best chance to catch up. I re-edited (“remixed”) the four parts and some of the extended material into one big piece without repetition for fluent watching.
If you like the thing, you should give Kirby credit.