The style of protocol definition may be at fault here. X.25 defines a protocol at an interface. It describes a contract between the two parties, the network subscriber and the network. Software tests for compliance with the protocol.
The protocol also has efficiency problems.
A commentator faults a Bittorrent for adopting a protocol that performs better for it, but impacts other services negatively.
Here is an admonition for crackers not to use said site to learn how to break systems. I doubt that it serves any ends.
A New York Times article noted that streaming protocols pointedly ignore slow start conventions and may thus dominate conforming traffic. They did mention that incentives might be necessary.