Earlier quoted context omitted.
Honestly, we've had a lot of fun with OpenFaaS and services that can publish to it. You'd be surprised how great it is to pass a parametized query and have it turned into a function quickly. Doing stupid things on AWS is really easy and sadly billing can be up to 24 hours delayed.
Isn't there some sort of security built-in, like "if suddenly the bill becomes 1500% the norm, kill the instance and start serving 404s"? (I know nothing about cloud, honestly curious)
There are lots of posts online that document "talk to amazon and they'll take out the extra charges" but there are even more cases where the people just pay the bill and thus amazon makes money and profit.