"Furthermore, the assumption that traffic management is the cause of service differentiation is itself a narrow and misleading assumption. If you take away traffic management from a network, the network wouldn't suddenly become a Garden of Eden-like paradise. It probably wouldn't work at all."
Wow, so much BS I need to put on protective goggles.
It is possible to have network infrastructure that has more bandwidth than the consumers can use. Every Ethernet switch worth the box it came in manages it just fine.