You are right, but if you ever been to a country without net neutrality then you will notice that the "free" volume goes down and the facebook/youtube does not

You are right, but if you ever been to a country without net neutrality then you will notice that the "free" volume goes down and the facebook/youtube does not count towards the volume. Do it's basically doing exactly what everybody fears. However, if you would charge facebook/google for using the infrastructure it would be another case... But let's be honest, they never let that happen.