View this as an insurance and it suddenly all makes perfect sense. You pay a little more so if this month your usage pikes, you won't get a surprise invoice you

View this as an insurance and it suddenly all makes perfect sense. You pay a little more so if this month your usage pikes, you won't get a surprise invoice you didn't budget for, and you won't get cut either. At worst, you'll get rate-limited. This price stability is valuable and paying extra to get it isn't being charged an unfair price. Of course if you don't find it beneficial, you should choose another offering.