To be as charitable as possible to the grandparent, it may depend on whether there are any closed-source elements to the cloud services. We don't know for certa

To be as charitable as possible to the grandparent, it may depend on whether there are any closed-source elements to the cloud services. We don't know for certain because it has yet to be announced. (Of course there's no realistic chance of that happening given Mozilla's foundational principles and solid track record thereof.)