Back in the early '10s I was reading a report from a guy who had stellar credit and the card limits to go with them. He ran up about $100,000 of debt on his cards on purpose and stopped making payments. He then approached his bank to settle the debt and negotiated a 60% discount. The account was marked "paid by customer" so it never appeared on his on his credit report as a default. He did get dinged for missing payments though, but was $60,000 richer.