This sounds a lot like "Thank you for using our product. Unfortunately, when we made the deal we were unable to do math to figure out how much running a piece o

This sounds a lot like "Thank you for using our product. Unfortunately, when we made the deal we were unable to do math to figure out how much running a piece of our infrastructure costs per user, so if you'd like to keep the stuff we gave you for free, you're going to have to pay up. We have altered the deal. Pray we do not alter it again."