Comment by mrkurt

I think such features create really negative surprises too. People expect their app or service to keep working at almost any scale. Disabling an app that hits a threshold sounds terrible, because most peoples' apps _benefit_ from more (legit) activity and they are delighted to pay the extra fees if things just continue to work.

For people who are inexperienced or don't give it much thought, just waiving their overage fees creates a really nice experience. We've had multiple instances of people asking why their bill is so high and being relieved/excited when we explained it and made it go away. People love when we're responsive to problems.