This is a perfect example of a cost savings opportunity that offers no benefit and is really just a foot gun when it comes to operational complexity. The cloud cost savings almost never justify the operational costs here. There’s typically a very long list of other cost optimizations to be made before this would ever be on the table for me. If you’re talking about 1500+ databases and think a single full time devops+dbadmin in some kind of unicorn person is going to be a better option, I feel bad for both of you.