So basically, Apple fell in Epic's trap and provided a clear example of reckless retaliation to be used in the real trial. A behavior Apple was specifically asked about in the recent antitrust hearings.
At no point the UE licence was at any risk, even if the dual company move didn't work they are one step from turning off the Fortnite transactions (which I expect will happen once the story becomes old news and the trial starts proper). At this point the transactions are still up because it's generating lots of good buzz.
I think Apple should really start taking this trial seriously, Epic is no pushover indie company nor desperately dependent on iOS and unlike similar cases they can't be scared into obedience with one flick, and Epic has clearly shown that when they want to kill a monopoly they put their money where it hurts (see Steam) regardless of what people and partners say or think.
Again, it's two horrible companies fighting, with the hopeful outcome of making corporate censorship and monopoly of mobile computing a crazy thing of the past, the worst outcome being that things stay the same. Literally free entertainment.