I fail to see why extending copyright is "stupid". What is wrong with a company like Disney, whose very existence depends upon certain materials, to want to retain the rights to those materials?
And I find it very interesting that many people seem to consider patents to be "stupid" as well. Come on, drug companies, for example, spend hundreds of millions of dollars developing their products - why on earth is it okay for their rights to expire in a few years and thus be produced by some companies which did not have anything to do with that development effort?
Sometimes these issues are presented as black and white, and, well, there are two sides to a fence. There are good reasons why these laws exist.