Sony's gaming revenue is ~26 B
8 % of MSFT's revenue is from gaming = ~15 B
Nintendo 12 B
ABK 8 B
EA 7.5 B
( and that isn't including tencent and netease. i didn't bother trying to find figures for them but they are in the running here too )
What's wrong with subscriptions? It lets a distributor scrape off the excess profit. Games are a hit driven business. It sounds great when a platoform offers two or three times the cost of development to a developer, but the model won't really work unless some titles make like 10x. Listen to Jason Blum explain why Netfilx is terrible for independent film.
You will just see a lot less independent developers (not hobbyists) and small publishers. Maybe no one cares. I will probably be retired by then.