"I've looked many hours to find how many bankers are Jewish but that information isn't nearly as public so it's a lot harder to know."
Wow, are you so obsessed and paranoid that you need to spend hours and hours searching for Jews?
Do you check for Jews hiding under your bed every night before you go to bed?
Media companies are corporations, as are banks, and they are owned by shareholders. Corporations don't keep tabs of the religion of their shareholders so to claim that almost half of media companies and a quarter of all banks are owned by Jews is a lie. If a Jewish person has become an executive of that company then it is due to hard work, something that perhaps you should try. Maybe if you spent less time searching for Jews and more time working hard you would not be blaming others for your failings. Company executives are answerable to the shareholders and can be sacked via a vote by the shareholders, so the executives in no way "own" a company.
Btw, you can move to Israel if you are not Jewish. Around a quarter of the Israeli population are not Jewish and many of them are immigrants.