Earlier quoted context omitted.
We are reaching out to customers that are in unique situations such as the one you're mentioning here. If you have questions about how the pricing changes affect you, please don’t hesitate to contact support@github.com.
If you need to give Epic Games special treatment just because they have a huge amount of outside collaborators, then your pricing model is broken. It would be more fair to charge $9/mo per organization member + $1/mo per active outside collaborator (somewhat similar to AWS CodeCommit) than to charge for every single active and inactive member and collaborator equally. Maybe throw in a 50% bulk discount for active out…
That is just how business-to-business deals work.