Not to any non-trivial extent. Given that nearly always the vast majority of royalties aree realized within a few yers of publicayion, anf given that with any r

Not to any non-trivial extent. Given that nearly always the vast majority of royalties aree realized within a few yers of publicayion, anf given that with any reasonable discounting getting a dollar 100 years from now is worth less than getting a penny today, even without taking into account that you will be dead, there really isn't an incentive argument for long copyrights. The economic incentive effect for having a longer copyright term than about 20 years is approximately nothing.