A friend joined them to get protection because he got beaten a lot. He left again after his first drug trafficking job was offered to him. (and fortunately he was allowed to leave because he didn’t know enough yet)
My schoolmates rented a club house for parties and the bikers wanted to do the security themselves. The have beaten people and kicked one drunken guy lying on the floor who argued too much with them. Completely unprofessional.
This was late 2000s in rural Germany.
The Australian model is also interesting. After your degree you pay a certain percentage of your income to your university for a decade or so. But only if you earn more than the average person.
This means a university gets more money when their students gets good job.