If I were looking for an engine to build a game on I'd have to think twice about using Unreal Engine in the future. Having the company that builds such a foundational component of the product in open war with one of the most important platforms it runs on is an added complication that would only harm me.
In this case, it seems the goals of Epic the game publisher versus Epic the component supplier really don't align, and Epic the publisher's needs are winning out.
Disagree, this lawsuit strongly supports Epic the component suppliers business as well, because one of those components they can supply and make significant money off of is payment processing.
There is a bit of a conflict between Epic the component supplier and Joe the game developer's goals here, because Joe the game developer doesn't really care whether it's Apple or Epic taking the payment processing cut. Joe doesn't necessarily lose either because Joe seems some benefit (just less) too due to competition lowering the cost of payment processing. It's just not clear cut.
In reality it probably the case that some game developers will win thanks to lower cost of payment processing dominating their cost benefit analysis, and others will lose thanks to worse unreal engine platform support dominating their cost benefit analysis.
3) Epic wants to establish a precedent against these policies for possible use in all markets. Apple is the clearest case to make, the other cases are more ambiguous, if Epic won't win this it won't win elsewhere.
In this case, it seems the goals of Epic the game publisher versus Epic the component supplier really don't align, and Epic the publisher's needs are winning out.