Could you please elaborate on that? Which particular law are they abiding?
https://ico.org.uk/for-organisations/guide-to-data-protectio...
Given the country list, this is being done to likely get ahead of some kind of regulation, but I don’t think this is necessarily due to this specific clause. This is above and beyond what would be minimally required.
But from other comments, it looks like this is the start of other data transfer initiatives between major tech companies. Which would be a good thing, even if it is a result of trying to avoid further regulation.