You solve this by opt in, not fancy engineering. There are two classes of customers - those that absolutely can't afford services be cut, and those that absolut

You solve this by opt in, not fancy engineering. There are two classes of customers - those that absolutely can't afford services be cut, and those that absolutely can't afford a 50k bill. So you deploy an advanced technology known as a radio button to toggle which they want, throw a bunch of ToS & consent agreements about data loss / deletion at the ones opting for hardcaps....and done. Also reminder that Azure has hard caps for certain account types. This is not a technical problem. They can do this, they just don't want to.