That's not why they're going after Sony though.

She says the company abused its dominant position by requiring digital games and add-ons to be bought and sold only via the PlayStation Store, which charges a 30% commission to developers and publishers.

Maybe Nintendo has a similar practice with their Nintendo shop that they could be sued over, but regardless they're still allowed to price their own games however they want.

Ultimately, I suspect the entire model for digital game delivery on consoles will have to change as a result of this case. Not that those changes would be bad, of course (indeed, they're sorely needed), but they will occur as a result of console manufacturers having to open up their consoles to...sideloading (not sure this is the word, but it's all I've got right now)?