They can't block all ports coming out or the network won't work at all. An ISP can artificially try to price you under the "business class", but they have to l

They can't block all ports coming out or the network won't work at all. An ISP can artificially try to price you under the "business class", but they have to let you send packets out, otherwise what is the point of having an ISP? My kingdom for some net neutrality!