Internet is very neutral in the US because major states like NY and CA have legislated strict net neutrality laws, literally making it infeasible and risky for companies to violate it. You don't know whose traffic will pass from which state and which backbone so it will inevitably end up with you violating the laws of these states. How do we know? This is exactly what they say - they WERE going to violate it, but now its too risky with the fines...