Re: Or....
That I understand but is that a problem. Mickey Mouse is still a going concern: Disney are churning out stuff using Mickey Mouse. Why should I be able to appropriate the mouse-ears image after X years if they're still actively using it?
As for intention of copyright law isn't there an element that this was design as a protection with the assumption stuff would have a limited shelf life? Life of originator is arbitrary anyway: I could design a cartoon character and set up a business (with other people) to develop cartoons. I might live to be 100 or get killed tomorrow; if the latter the business should still benefit, surely?
There are anomalies here but I don't get that it's all bad. (E.g. the very limited Bob Dylan releases to keep his early recordings protected.) I thought "IP monopoly" was an odd phrase. Disney's unending benefit might not have been the intention but I don't think me being able to appropriate notable names and designs is ideal either.