It's not fair to make assumptions like this. I have a Google App Engine app which doesn't push put a lot MBs each day, but does use a fair amount of CPU, and I'll pay for it. It's not a poorly designed service, it's a service which doesn't generate a lot of traffic (when measured in MB), but I'm getting value from it elsewhere. In this case, my app on GAE is an API which my front end (hosted elsewhere) is consuming.