It adds a barrier and discourages abuse. You can no longer own millions of copyrights "just in case", like many companies do right now, because maintaining ever

It adds a barrier and discourages abuse. You can no longer own millions of copyrights "just in case", like many companies do right now, because maintaining every single one of them costs money each year. Obscene amounts of money if you want to maintain it for a long time. Want your copyright to be 15 years? That'll be ten million dollars per copyrighted work, please.