I've never seen an instance of that happening. Could you send some examples of cartels owning banks or having a significant amount of control over them?
Here is one cartels story: https://www.npr.org/sections/parallels/2014/03/20/291934724/...
Check out this story how things can work out https://www.propublica.org/article/china-cartels-xizhi-li-mo...