I Followed the Official AWS Amplify Guide and Was Charged $1,100

Let's say 25% of people dont argue with customer service for a chargeback.

Best run company in the world /s

It's a Tim foil hat pet conspiracy that I have, but I strongly believe that part important of the business model (or revenue share) is from people making mistakes or forgetting resources; more or less like gym subscriptions where the gym owners are more than happy to sell the [maximum_amount_of _people + 40%] knowing that the absenteeism will give the revenue offset that sustain part of the business.

There's certainly wastage in large organisations. Over provisioning or keeping that huge S3 bucket full of data from some long forgotten project.

I suspect a lot of the huge AWS customers just eat this because it's so hard to mitigate.

If a business has hundreds of AWS accounts it becomes very hard to track, and if each account can only shave a few hundred dollars a month off their individual bill then there's very little impetus to actually do the work for the individual teams. Despite that possibly adding up substantial savings for the overall business.