I think it's worth stressing that both sides did something wrong. Apple's contract was also just ruled invalid, and they also aren't being forced to pay any penalties for that. They aren't being forced to compensate Netflix, Spotify, etc... for all the years those companies have been unable to link out to subscription signups on iOS, for example.

So consider instead that Epic and Apple were both penalized an identical amount rather than neither side being penalized at all.