Amazon Web Services to Launch AWS European Sovereign Cloud

I believe there has been a general sense of "AWS/GCP/Azure are not compliant with EU GDPR (see Schrems II and possible future cases) but there is no alternative" with most EU based companies. So this will probably sell like hot cakes, a potential forced migration is just not something you want to worry about.

Technically this seems like a similar setup to GovCloud but accessible for the general public rather than just US Government agencies. Are there any big drawbacks of using GovCloud compared to regular AWS Regions?