It usually cures cancer. The current government concentrates wealth in the hands of the few. Less than 1% of the population owns nearly 50% of the wealth.
Wealth inequality here is growth of the richest few. That's why the economy by some measures is doing great - the rich are getting richer.
I don't see where you are getting the word purpose from. I assume you mean goal. If you want to place any outcome in the place of the major or most important outcome, then I arbitrarily declare our government's goal is to move paperclips, as that is an outcome.
I need to study that list of logical fallacies, because obviously curing cancer is the purpose of chemo, and suggesting otherwise is ridiculous.