IMO if you want to end the commercialization of content, targeting copyright is not the most effective route. Big players will still be able to use their power to ensure that they have control over distribution, and will continue to profit off of content. Small players, such as the people coming up with new content, will find it harder and harder to make any money, to the benefit of the big players who no longer need to share profits with them.

The more effective approach would be to simply remove the economy entirely. In a post-scarcity or communist or whatever you want to call it society, you could abolish copyright entirely without hurting anyone, because no one's able to profit off it in the first place and spending effort on things that don't pay off is no longer penalized.