The data sovereignty stuff is mostly just lip-service. Both the EU and Canada are in the process of negotiating reciprocal CLOUD Act arrangements with the US government similar to what UK and Australia already have in place.

> EU-US agreement [1]

> Negotiations with the United States to facilitate cross-border access to e-evidence for judicial cooperation in criminal matters started in September 2019 and are currently ongoing. At present, US-based service providers collaborate with European law enforcement authorities through direct cooperation on a voluntary basis or through mutual legal assistance (MLA) procedures.

[1] https://www.consilium.europa.eu/en/policies/e-evidence/