Nothing of the random unrelated stuff you posted proved me wrong
Similar to what happens in console, in mobile or gaming in general, or basically in any market: yes, the some top players always take a big majority of the market revenue in basically any market, also in non-gaming ones.
But no, Steam doesn't generate the $9B/year shown in that guesstimate at all, as shown in the graph you provided PC generates around $40B per year and most of it is from Steam. If something, these almost $9B/year would be what Valve does from Steam every year (not counting the cut of the other publishers/devs).
This is not the revenue made in ther consoles, and even less in the digital store of their console only.
https://www.tweaktown.com/news/9655...on-made-30-billion-in-2023-xbox-18/index.html
I don't know in which fantasy world do you live.
The PlayStation console never did $30B in revenue for a fiscal year in their whole history, and their PSN store even less. Even their whole SIE/G&NS division never did $30B. In console they are counting the game subs, without it console goes down to around $40B.
Regarding the PC yearly revenue, the game publishers quote constantly IDG or Newzoo in their fiscal reports, which show PC doing around $40B/year.
Here you have the IDG one saying it, and also that physical+digital game sales plus addon revenue from console (not only PS) was in CY22 $30B, and removing physical $21B. And Sony claimed to have under half of the console marketshare. While PC was over $40B (a small part of it may be game subs, but not the half):
Wrong.
According to Steam's monthly data, around third of the Steam players use it on these languages, a bigger percent than English.
Simplified Chinese 30.31% + Korean 1.49% + Traditional Chinese 1.44% = 33.24%
A big majority of the around $40B/year made on PC are from Steam (let's say aprox. 75%), and if something around a third of that comes from China and Korea, Steam, that would be over $9B of the generated by Steam from Chinese and Korean players would be over $9B.
Obviously way less than in the rest of the world, but Steam must have a big chunk of the China + Korea PC market.