GarrettG and conflict of interest

What happens if GarrettG meets NRG? A team he co-owns. That would be a conflict of interest. Depending on whatever benefit him the most financially, he can just throw the match. No matter what happens, it's def a conflict of interest. How would this be handled, if at all? And isn't it kind of unethical having a hand in two teams fighting in the same league? Imagine someone buying ALL teams, then he always win... I mean, yeah. I think, usually in other sports there are specific rules for these kind of things, what are the rules regarding this and RL?