I tend to lean against regulation but this is one of those cases where I wouldn't mind seeing FB somehow banned from anything related to currency.
They'll have their own armed forces, soon enough
Remember the letter sent to Libra consortium members by US senators? [1]
They threatened Visa, Mastercard and Stripe with extreme regulatory scrutiny of all their payment business (not only Libra-related) in case they would stay on the project. The threat worked and the threatened companies left the consortium soon after.
This is right out of the playbook of despotic governance: create laws so complex that everyone is probably violating some of them all the time and then selectively enforce the law against those you don't like.
[1]: https://www.brown.senate.gov/newsroom/press/release/brown-sc...