It all depends on the nature of the work you are doing. One thing is to own a service that's used by 10 MAU and you extend the service with a job that calls th

It all depends on the nature of the work you are doing. One thing is to own a service that's used by 10 MAU and you extend the service with a job that calls the OP's service 100 times a second. That's bad, you are using way more than you need. Another thing is to own a mobile app used by 10M MAU and you embed the OP's service into the app. That's not bad intention, you just added a new service to your app. The problem is that the OP's definition of "unlimited" is not really unlimited.