Have you checked out the latest European Dataspace movement and the Gaia-X developments? They're generally infrastructures trying to support exactly this level of data maturity!
From what I know/remember it started as an attempt to create an EU cloud (to become independent from US providers)... then funds started to dry up, you can just search Gaia-X here on HN to get an idea of the way things developed from 2019 to https://www.theregister.com/2024/01/08/gaiax_future/
