Afaik they cannot ignore a ruling. And they don't need 30% fees for maintaining IOS ecosystem - when you buy an apple phone for $1000, you pay Apple enough for it to maintain its AppStore.
Also they earn money from AppStore advertising (which apps out of the millions should the small screen show); so maintaining AppStore should not be a problem.
This doesn't apply in this case because Apple is not stupid. They are not gonna ignore a court ruling because it will land their execs in jail.
Rather than that, they will use legal means such as appealing the ruling. They are a 2T$ company, and they will try their best to use their money to change this decision in their favor.
Because that’s not how the law works. Sure, they can technically ignore the ruling, but they’re opening themselves up to a whole host of lawsuits, and any judge in those lawsuits would not look favorably on Apple.
Also they earn money from AppStore advertising (which apps out of the millions should the small screen show); so maintaining AppStore should not be a problem.
I don't know about the bad-actors part though.