They mostly sell space in their digital game shop, and services directly related to that shop.
Like, when people say “split up Google” or “split up Amazon” I know what they mean: you have a bunch of things that would ideally be profitable competitive businesses, under one umbrella—Chrome, Android, ChromeOS imagine if browsers and operating systems didn’t have a market price of $0! AWS, Amazon shop, etc. Valve, I don’t see it…