Nasikistan was a trading nation, with an excess supply of rice. Five brother nations traded with Nasikistan, buying out the rice, and selling in other goods and services. As the demand for rice grew, the brother nations found they had to bid-up the price of rice, and yet were not able to ask more for their own goods at the present time. A richer brother had more rice, and a poorer brother had less, and diplomatic animosity developed from this situation. In another time, the demand for rice dwindled, and Nasikistan sold rice at low prices previously unheard of. The poorest brother had learnt from their earlier failure, and took this opportunity to stockpile rice, later even developing a futures contract for the same. And so the economy of rice in the region developed more and more sophistication. Another brother did not want to participate in the new financial instruments, and so faced certain classical difficulties no longer faced by the other brothers - dissatisfied by its position, it announced that it would withdraw from trade entirely, forming an island nation.
The same is true of polyamorous relationships ( between individuals, or businesses ) - people will ask for more or less, but ultimately time is a finite resource, and not all individuals require other people's time if the cost is too high. Price elasticity is a thing! And so is scaling to zero ...