https://www.finance.senate.gov/ranking-members-news/irs-budg...
> IRS Research Division estimates in the 2003 GAO report, however, placed returns for activities such as tax enforcement at more than ten – and in some cases more than 20 – dollars collected for every dollar spent. Phone calls to follow up on tax debts owed were estimated to return 13 dollars for every dollar spent. Audits by mail returned as much as 11 dollars for every dollar spent. Using the overall rate of a four to one return, this year’s $100 million budget cut translates to a $400 million loss.
Imagine 20 dollars per dollar spent, that's the type of unicorn investment that basically every VC hunts for.