The best form of cooperation is when both parties feel they have an advantage.
As for Ian "Freeloader" of Silver Peak, there's no need to elaborate further. He never considered himself at a loss. For the Great Prince, cooperation with Ian was no more than utilising a bit of his political privilege, which is not a waste, in exchange for crucial information about social experiments from Ian.
Similarly, the Firestone Group simply uses their surplus funds to exchange for key technologies from Ian that they can later use to make more money.
Everyone can obtain the resources they desire from Ian, which is also why everyone is willing to cooperate with him.
For the Prophet, this is basic practice.
So, what do Scott and Green Tide want to gain from Ian?
"So soon?"
Green Tide is not an outspoken person without thought. In fact, he is quite delicate in his thinking, which is why he doesn't mind occasionally making jokes to liven up the atmosphere.