Yeah this is a huge problem. I suspect this is significant for people to choose inferior non-hosted alternatives just for peace of mind. Hard limits would probably create a large influx of users.
Even for something as simple as S3, I'm hesitant to use the real service during development because it's so easy to stack up charges. For one of my accounts, the usual bill is <$10 but last month it was $27 because there was some network flakiness that resulted in excessive transfer.
Even for something as simple as S3, I'm hesitant to use the real service during development because it's so easy to stack up charges. For one of my accounts, the usual bill is <$10 but last month it was $27 because there was some network flakiness that resulted in excessive transfer.