The terms of copyright last far too long: either the life of the author plus 70 years after death for a personal work or 95 years for a corporate work. That length doesn't encourage more authorship - it merely limits the speakers who could share powerful speeches, books, and films.
Under the Constitution, federal law trumps both state and city law. But antitrust law allows states some exceptional leeway to adopt anticompetitive business regulations, out of respect for states' rights to regulate business. This federal respect for states' rights does not extend to cities.
In 1984, the Federal Trade Commission released a report that explained why taxis could charge customers exorbitant prices for dismal service. The simple reason, according to the 176-page study: lack of competition in the market. The culprit: local governments.
Under the 1998 Digital Millennium Copyright Act, Tumblr, YouTube, Reddit, WordPress, and Facebook aren't responsible for the copyright infringement of each of their millions of users, so long as they take down specific posts, videos, or images when notified by copyright holders. But copyright holders thought that wasn't good enough.