If I want to build a big company how do I prevent stuff like this? What if I aggressively fire those kinds of managers and anyone playing these kinds of politic

If I want to build a big company how do I prevent stuff like this? What if I aggressively fire those kinds of managers and anyone playing these kinds of political games? I imagine you'd have to deal with lawsuits but you'd be more successful as a business so it wouldn't matter. Setting the right vision and hiring well helps. But I think you need to have consequences for when you make mistakes there.