Not to mention the reviews, community hubs, workshop, video streaming and recording, controller support, cloud saves, family sharing.
30% may be a lot, but it’s not like they’re just sitting on it.
EA and Ubisoft don’t offer (most of) those features with their launchers where they do get the full proceeds.
I remember PirateSoftware talking about the remote play online co-op on steam, I think I found it here:
https://www.youtube.com/shorts/Iu4kpM692vI
Definitely doesn’t seem to be sitting on it. Hell man, I have re-bought some games on other platforms just to re-play it on my Steam Deck.
I can’t defend/accost the 30% simply due to my lack of knowledge in the industry.