I live in the EU and have read this in the terms for my region.
> they have no legal obligation to follow through and give you what they promised
Yes, they do. Contracts are contracts. They just don't promise you ownership of anything but a revocable license. Like every platform offering DRM protected content.
And that's only because when Activision makes a digital "sale" they have no legal obligation to follow through and give you what they promised.