Copyright (and Copyleft) is a societal concept, not a technical one. In the technical world, there is only copying. If someone tries to limit your ability to copy data by using a societal concept as an excuse, they are directly censoring the content you interact with. That's not just democratically harmful, it's a bad omen for the market.
It's so anti-revolutionary that currently-sitting administrations in America and Europe agree that Apple is deserving of anticompetitive inquiry.
