Information on openai changes quickly and is very unreliable, but:

https://www.maginative.com/article/openais-annualized-revenu...

This site says 3.2B of that comes from subscriptions. Omitting usage via API and assuming 1 user = 240$ annually that makes 133.3 million subscriptions.

https://backlinko.com/chatgpt-stats (says Jun. 04, 2024 but this might be outdated a bit more)

Here it says openai has roughly 3.9 million subs in USA. On that basis I would assume roughly 8 million in Europe. Even if we add India and China(but they don't operate in China currently from what I gather) with numbers raised linearly along their population this doesn't add up. Maybe they rake in a lot via their enterprise plans or am I dumb and missing something ?