I agree with point 1 and point 2 should really be to the end of the original author's lifetime, or 40 years if it's the work of a corporation i.e. a work for hi

I agree with point 1 and point 2 should really be to the end of the original author's lifetime, or 40 years if it's the work of a corporation i.e. a work for hire. Additionally, the renewal should cost (2 * i)^n dollars for each year beyond that, where i is the inflation adjustment and n is the number of years. You want to preserve your copyright for 10 years? Fine, it'll only cost you ~$2k. You want to extend it for 30 years? That'll be a billion dollars, please. The original author no longer cares, and their offspring have had their chance to profit from it and start to create something new. Having an idea first shouldn't grant you and your bloodline (or shareholders) exclusive right to it forever.