Copyright was not introduced by authors, it was introduced by the people who print books, or at least some of them. In Germany books and booklets were dirt cheap, which allowed broad access to all kinds of works and consequently knowledge to spread. Then came copyright, and guess what happened: It wasn't exactly the authors who got richer, and neither the biggest bunch of the guys who printed all these things saw any of the benefits, either. It was a net loss for the society, because some greedy idiots couldn't get enough.

Trademark also has a good few issues, aside of being abused to the point where it becomes obviously stupid (like trademarking colors, common words and similar idiocies). It also cannot prevent counterfeits, which is more a game of whack-a-mole than anything else.