I live in the same such country with such rules. They assume rightly that if you request that amperage you will use it and they will plan and bill you to handle

I live in the same such country with such rules. They assume rightly that if you request that amperage you will use it and they will plan and bill you to handle it. And yes we then also pay per kWh :) Why would it be harmful to run at the amperage that I'm buying ? What disincentives do I need?