I agree that paid GApps customers absolutely do, and maybe even a slight refund for the outage they should be taking. But free customers don't. With no payment also comes no expectation of service (outside the Terms of Service, which probably says that this kind of stuff will happen from time to time).
I respectfully (and strongly) disagree. You're essentially saying that free customers can be completely screwed over and have basically no rights at all (and you seem to be implying that this ok). Legally speaking, maybe Google has absolutely no obligation to say anything (even to it's paying customers), but this isn't about meeting the minimum legal requirements.
On a related note, how many people really have the ability to comprehend the ToS they click on? The reading level of many of those is surprisingly high given the demographics that use the services, so the concept of 'informed consent' is already quite strained imho. Therefore, people fall back on trust and it's probably in the providers interest that they do this (as they can make a ToS that's great for their own needs, while legally providing very little to the user).
> With no payment also comes no expectation of service
As a general rule, this is not true according to the law. If I feed someone a free meal, and they get food poisoning because I didn't maintain proper hygiene in my kitchen, I am at fault.