Epic is not suing Apple because Apple used nefarious means to achieve dominance. You, I and Epic would probably all agree they earned that dominance fair and square.
But once you have dominance different rules apply.
But once you have dominance different rules apply.
Ideally, I'd prefer that this kind of back-and-forth between developers and Apple would happen strictly through negotiation, rather than invoking the court system, but I realize that not all markets are functioning well enough for this to be practical.