Criminal Activity
You are either a normal-sized person, or trapped in hell for all your life.
What at first started with only a few small stores, popping up here and there as just some cheap rentals, then slowly grew into a fully established business chain. After the government, or rather the Shrunken Department itself, discovered the hidden potential that these immoral shops could truly hold.
So, blinded by the possible wealth, slumbering inside these inhumane acts of selling of their shrunken people, the Shrunken Department secretly began to effectively advertise and endorse these desire-driven businesses.
In exchange for just a little cut of their bloodstained earnings.
And with the idea of owning, or even consuming a Shrunken, growing more and more popular amongst the now curious public, the original legal supply line was soon no longer enough, to keep this rapidly expanding empire stocked.
Which caused a scarily fast thriving black market to rise from the shadows, offering not only faked Licenses of Consent, but also a service of capturing entire boxes full of unwilling Shrunkens. To make sure that these immoral businesses are kept well supplied.