I don't think we'd really be that much worse if copyright were eliminated. Look at OSS. It is exists in a copyrightless state, and it has taken off. The same method could be applied in many different areas.
Still, I think a degree of copyright is necessary for artistic works. As for technology, I think society might be best off with copyrights and patents being limited to 5 years, maybe 2 years for software source code, and no patents for processes.
My big gripe is that copyright is no longer about promoting science and arts, it has been perverted into nothing more than a business tool, and a restrictive one that hurts the public at that.
V