There's two issues with copyright.
1. author owns the right to distribute copies of the work
2. this right goes on for faaaaaar too long.
I don't have an issue with 1. You had a good idea, you implemented it, you deserve something for it. Given some people got sued into oblivion with ridiculous dollar value outcomes on a per unit basis - why doesn't this apply here? Sure 1.5 billion is a lot. But the number of infringments is insane and the company is approaching a trillion in valuation. You could make it ten times that number.
I do have an issue with 2. Sure, you had a good idea, you implemented it, you deserve something for it. But after 20 years, you should be able to come up with another idea or just work like the rest of us. Going for 50, 70, 90+ years with the rewards going to estate heirs? Fuck that.
So yeah, I am both against copyright AND surprised at the slap on the wrist for what happened here.