There exist totally a solution. It is also user hostile enough so it might get's adopted. $cloud_vendor just has to (and probably will) constantly nudge people

There exist totally a solution. It is also user hostile enough so it might get's adopted. $cloud_vendor just has to (and probably will) constantly nudge people to loosen the limit. Have a red banner that says, "you spend 3% of your monthly budget already think about increasing it". Also routinely send out emails to remind people. " Black Friday comes up think about increasing your quota " when your service has nothing to do with E-Commerce.