Just in the US. I have ONE European client... ONE of dozens who use GitHub.
EVERY other client I've ever worked with used their own gitforge or at least bitbucket...
Github pricing is aimed at US companies. Small EU companies that can only afford to pay their 5-6 developers 60K euro per year rather selfhost than pay GitHub.
Selection bias then as the majority of European companies are for sure not hosting their own Forgejo or GitForge.