local lobbies are the most powerful at writing local regulations.
The law in question is on a _federal_ level. It's not a law in Berlin the city, Berlin the state, it's a law in Germany.
Your condescending comments ("Haha, they don't believe in political corruption") are neither on topic nor relevant to the issue at hand. I advice you to stop and rethink your approach here, and maybe gather more facts first. You're just trolling at this point.