tldr: stored 1pb in a GCS bucket. this persons twitter account is about how they have hacked growth and have had 3 number one apps, crazy growth, etc. well, I hope they can pay.
also, billing caps really don’t make any sense. a competitor could easily exploit that to take your service down. best to you know, architect your stuff correctly… speaking of architecture, creating a paas where you have a hard billing cap would pretty much obliterate performance as you would need round trips each time you do anything in order to confirm you’re not over the amount.