As much as I like Tim Sweeney's arguments for lower royalties, he doesn't have half a toe to stand on.
Don't want to pay the Apple tax, make your own phone. This fairness coalition is free to manufacture Android phones with a no royalties store . Hogan's Law on YouTube has done a very good take on this. The government can not compel two companies to engage in a contract. If I set up a newspaper stand and decide anyone who wants to sell news papers needs to cut me in for 30%, you can't demand special treatment.
I could see Apple making an example out of Epic and banning them for life. You don't sneak in hidden functionality, and then flick it on via a server side command