Sounds utterly illegal, and likely to lead to countless lawsuits. They’ve got better phone support than Google, especially when you’re a paying customer, and I’m not expecting one of the biggest corporations on the planet to just up and leave with my data, and I’ve sure as shit never heard of it happening.
Microsoft products have a bunch of problems I’m happy to moan about, and a UX team that I swear doesn’t even use M$ products, but data security does not seem to be one of them.