A googler recently commented here that, in order to forgive "bigger" bills, you really need to know someone to pull some heavy strings for you - and that it doesn't happen in many cases.
This taught me to be very very careful with this stuff, and to not bet on Google or Amazon being nice to me when I am bound to mess something up at some point - because with the complexity these services carry, it's no wonder people fall into cost traps all the time.
I do use AWS S3 for storage and it's very cheap for my needs. But I do periodically think about switching to a VPS (or to Backblaze which does let you set a hard cap).
I also help out a small non-profit newspaper mostly operated by students. We're going to need some storage for an archiving project and there's no way in hell I'm going to use AWS for that.
This taught me to be very very careful with this stuff, and to not bet on Google or Amazon being nice to me when I am bound to mess something up at some point - because with the complexity these services carry, it's no wonder people fall into cost traps all the time.