Imposing Platform Parity Obligations (“PPOs”), that prohibit publishers from selling Products through other distribution channels on better terms than the same Products are available on Steam. The PCR alleges that the PPOs are likely to cause, and have in fact caused, restrictions of competition.

Not sure I'm understanding this but... how do you explain when we find in official retailers such as fanatical or humble same games at lower prices?

Imposing anti-steering provisions to the effect that, if a publisher wants consumers playing its Games distributed on Steam to be able to make in-game purchases, all such purchases must be made using the Steam application programming interface, and therefore Valve’s payment processing service. As a result, the payments are subject to Valve’s commission charges. Such anti-steering provisions leverage Valve’s dominant position in the Game Markets so as to enable it to secure a larger share of the Add-on Content Markets, by preventing or restricting the ability of other distribution channels to supply (including self-supply) Add-on Content for Games distributed on Steam.

This is also something I don't get. I think games like FFXIV which has an online store lets you buy directly from their store (outside steam) their items, if that's the case, how does this part stand its grounds?

Imposing excessive commission charges which amount to an unfair price which is then passed on to consumers.

This I get, but couldn't valve simply say: "Go to epic store if you want lower fees"?

They’ll make that amount in 2 hours.

Weird title. I thought it was Steam account owner trying to get 656 million in damages.