Valve has to provide some Steam sales data to Apple, judge says - Ars Technica

In addition to some aggregate sales data for the entirety of Steam, Valve will only have to provide specific, per-title pricing and sales data for "436 specific apps that are available on both Steam and the Epic Games Store," according to the order.

Refocusing the request only on games available on both Steam and the Epic Games Store makes it more directly relevant to the questions of mobile competition in the case, Judge Thomas Hixson writes in his order.

"Recall that in these related cases, [Epic] allege that Apple’s 30% commission on sales through its App Store is anti-competitive and that allowing iOS apps to be sold through other stores would force Apple to reduce its commission to a more competitive level," Hixson writes in the order.

on 436 specific games that are sold in both Steam and Epic's store, Apple seeks to take discovery into whether the availability of other stores does in fact affect commissions in the way [Epic] allege.".

In his order, Judge Hixson said that the data collection "did not sound that burdensome." That said, Hixson did agree to limit the response to data starting in 2017 (rather than 2015, as Apple requested) because the Epic Games Store didn't exist until 2018.

Hixson also rejected arguments that Apple should subpoena individual developers for their pricing and sales data, saying that potential effort would represent an "undue burden" on Apple.