Otherwise it'd be pretty interesting if you could buy your own debt at a huge discount.

This is sort of how collection agencies work, although the discounts here seems to be even steeper.

Most companies that own debt and those who collect for them will take a deep discount on a lot of the debt they purchase/collect. Individuals should be able to routinely settle debt for as low as 20 cents for every dollar they owe. This would be too expensive for Strike Debt to fund.