While I agree with most of what is said here this notion will only be viable as long as there is a penalties/consequences that can deter these toxic players. I can see this in the professional leagues but not at home for most of the games out there. That being said there are game companies out there that try to create an environment in which allows a form of control via the community (e.g. you can report and send in a recording to ban toxic players). There are many toxic players out there and unfortunately most of them are kids and teens due to the many reasons such as developing impulse control, lack of consequences, and so forth.