How about addressing the sudden ban of your gmail, that also serves as the key to every Google service? You lose everything once that goes.
I don't see why you need a gmail to run a business. I have some accounts with google for some services, using my own domain's emails. And I am not planning to replace any of these with a gmail.
I think if you're responding to emails as part of a business the best course is to have and use e-mail accounts from your domain. It's more professional. And of course you don't have the risk of a possible gmail ban for whatever reason.
It looks like their physical data center security is great, as expected. Nice data center design and operations.
Unseen is their logical security. How is user data compiled across apps and services, aggregated and stored? How long is this data stored? Who has access to it? Is the backdoor to the government used only with court approval, or extensively without restriction? After all, Google knows everything about you, including your physical location if you use Android.