Economic Balance

Due to the human economy existing on a literal different scale, integrating it was a tricky process, even for the economic planning of the kiori. Early on, issues occurred in adjustment, but humans eventually came to face a relatively equal economy, and in some cases are better off due to their size.
In the industrial sector, acquiring raw materials for human scale production ended up becoming much cheaper for humans once the Union Credit took effect and trade reached the Sol system. This made human industry particularly powerful in its own area, manufacturing goods for other humans and precision manufacturing for the larger races.
However, in the private sector, the acquiring of manufactured goods isn't the same. On planets that will sell human and nonhuman goods, both are typically priced nearly the same, sometimes higher or lower than one another depending on the trade in the area. In theory, a human can buy a nonhuman item, but this results in a fantastically large item of very dubious use to the human. The economic potential of creating human scale items and selling them at standard price is a known factor, and lead to no shortage of alien goods available to humans. However, businesses that tried to cater solely to humans ultimately failed anywhere but in human space, as the loss of business from all of the other species guaranteed very limited growth.