Most revenue means more than 50% of revenue, not all significant revue. If a work get 10% or 20% of its total revenue in its second decade than there is a sign

Most revenue means more than 50% of revenue, not all significant revue. If a work get 10% or 20% of its total revenue in its second decade than there is a significant increase in the incentive to create and publish if the creator owns that work for its second decade. Again, I agree that Copyright lasts much too long. I was responding to the statement "no economic advantage of copyright after 5-10 years" (which it seems I misunderstood anyway, Houshalter replied that they were referring to no net economic benefit to society).