I hope this doesn’t come as a surprise but copyright holders do in fact declare the amount of money generated on their copyright and pay taxes on it annually, it’s called…taxes and it’s usually going to be a minimum of 10x all the way up to 40x your suggested rate.
Realistically for a company like Disney to pay $150M/year on Star Wars would be a joke and drop in the bucket compared to the amount of taxes attributable to Star Wars annually. All this would do is benefit big business that brush off those extra costs and harm new properties that couldn’t afford these taxes to protect their copyrights.