Last year, video game maker Epic set up its own payment system to bypass the App Store from taking 30% of its fees and ended up challenging the model of the App Store itself. The two parties have been in litigation since and filed their proposed findings of fact last week.  

Here are the key strategies for each side based on the filings and analyses from The Verge, Seeking Alpha and CNBC:  

• Epic and the monopoly route: Yes, Epic plans to go there, and it is ready to argue the App Store is not just anti-competitive but bad for consumers. Why? Because Epic says Apple’s 30% commission charge for app developers leads to higher prices, and its dominance has made it necessary for many customers to switch to or stay with Apple. 

• Apple and flexibility: Apple appears ready to argue consumers actually have plenty of choices, even if developers don’t. For instance, PlayStation and Xbox have similar “store” systems, and people can play Epic games on those platforms. There’s also the Google store on Android. On top of that, Apple will claim its App Store is a necessary component of its hardware and not separate from iOS.