I don’t feel great about this ruling. Whatever a “reasonable” fee is supposed to mean, Apple will interpret it to some ridiculous amount. Before the ban, they tried to charge 27%
I don't feel great either, but that's because prices aren't coming down, instead one billion dollar company just keeps more money than another billion (trillion I guess) dollar company, and we've lost some convenience features that Apple maintained, without any gain.
I think Apple will have a very hard time arguing that the "reasonable" amount is a percentage of revenue with no cap.