Well... you should look at that as an access control thing. "AI" as we know it right now on its own anyway doesn't learn - it is static - so the intrinsic learning only happens if someone captures the traces and trains the next version (or another model) on it. So we're talking a peripheral database to which access can be granted. You should not ever even consider once to outsource that to one of the corporate solutions, anything that is coercible by any government, or in fact any central repository that is such a high value target that it will per definition be hacked, at all.

Instead, keep your thoughts private and off the cloud. That way, it is your database, your own evolution and no one else's business, as it is supposed to be.