Right. Valve is claiming they didn't, and that they only demand price parity for steam keys. So it will be interesting to see how this plays out.

Honestly, I am not sure what game valve would play to do this. Devs could just make a red and green version of their game to sell on different platforms and price them differently. Meanwhile, to customers, a games price is a games price and developer publisher and distributor are always incentivized to find the highest price a customer is willing to pay through game theory. The market has definitely proven that customers don't care about what percentage of the cut goes to devs. So there is no incentive for anyone to post a game at a lower price than what a customer is wiling to pay on steam as long as steam retains the highest volume. Telling devs to not price the way they want seems very counter productive to being a good retailer, so who knows.