Uh!? What’s the issue with privacy? Qubes is great to make sure you don’t get a malware while you watch “youtube”, and this malware gets access to your bank account. I feel privacy is kind of out of scope here, not that you don’t need it, but you can plug it in with ease. There’s nothing in qubes design that prevents privacy.
Cloud is just a way to distribute computation, and make sure storage is always available to you. Everything should be assumed to be protected — I mean, they protect video memory among processes/apps, you’d bet they protect your data on the cloud.
There is currently no way to keep cloud stuff private. Maybe one day homomorphic encryption will be usable. And without that, the cloud provider can see everything. You can, of course, encrypt stuff locally first. But that's only good for static data.
That's all assumptions thought. I'm assuming they're protecting stuff. I'm assuming they're not looking at stuff. I'm assuming their underlying systems are patched. It's just assumptions that they're doing the right thing.
Cloud is just a way to distribute computation, and make sure storage is always available to you. Everything should be assumed to be protected — I mean, they protect video memory among processes/apps, you’d bet they protect your data on the cloud.