The age-old adage, "There's two kinds of people in the world..." applies to an enormous amount of traits, but here's one where its exceptionally true:
The kind of people who become VCs and have billions of dollars of AUM (assets under management) understand time-value of money calculations, and they understand them almost intuitively. $800,000 sounds like an enormous sum for most people, because for 99% of Americans, $800,000 is life-changing money. It pays off your entire mortgage, or most of it. It sends all your kids to college. It pays for their private schooling.
For the venture capital firm, $800,000 represents a minor clerical error.
Even discounting the goodwill that this displays, engaging the machinery to recoup this $800,000 investment will incur significant financial costs, but more importantly, it incurs opportunity costs. Sometimes its better to just flush the money down the toilet and move on.