hedwards: The whole point of copyright, at least in the US, is to enrich the public domain so that the creators can turn a profit on them in the short term. A lot of things like Movies and games wouldn't be profitable otherwise. But, any of those things that need more than 28 years to pay themselves off are probably not going to do it in 56 or a hundred years either.
rtcvb32: I enjoy
referencing this video...
A real problem with copyright is that it's based probably more on something that can easily be duplicated in bulk vs one at a time. Paintings hold no copyright because you make and sell one and only one painting. People who make takes and chairs can't claim copyright on them, and instead sell them individually as they are made, so it's a 1:1 ratio of work. Music and Books had to be copied by hand and took a very long time.
With the coming of the printed press, someone could create a book, then have it copied a thousand times very quickly, and sell those off for a profit, only having to write it once. Movies, music, media, games, digital art, etc, these all go on the same idea that it's easy to duplicate and thereby copyright is more relevant because it's much easier to make a profit by mass production or ease of copying 1:1.
But seriously, the relevance of the material quickly goes out. Within 3 years books are usually out of print when you're buying physical copies, games they stop producing after like 6 months, and the relevancy of a game is the lifetime of the system, or generally it seems 5 years. Same for just about everything else...
Um, paints have a copyright, virtually every form of expression has copyright. The only exceptions are things that aren't recorded. So, you can't copyright performances, just the recordings of the performance.