I am not a lawyer, this is not legal advice
The most recent decision from 2023 is that the “United States ensures an adequate level of protection” in the context of GDPR. This is the “adequacy decision” you may have heard about.
Thus servers based in the EU are likely not needed for GDPR compliance as of 2023.
Even in the case that this decision is overturned, you as a provider can still engage in a contract with your users as part of the above mentioned terms and privacy policy to allow transfer of data to US servers.
Data privacy law is complicated, and that is one of the reasons that we (unlike many other companies) don’t publicly say that we’re compliant.
But in the context of your studios, though there are many hoops that you as a builder have to jump through, to my understanding as of the present date compliance is indeed technically possible.
Pickaxe has no plans at this time to start using servers in the EU. All our servers are US based.