Well I wouldn't call it amicable however yes they attempt to collect payment on delinquent debt, possibly setup a payment plan, or accept a partial settlement.
Most debt is never collected however yes. Buying deliquent debt is high risk, high ROI activity. I tried to point this out in threads were people were selling Bitcoin debt for 50 cents + on the dollar but I guess people find it hard to believe. Even high quality delinquent debt (copy of contract, full contact information, ability to sue, high enough balance to make collection worthwhile, credit reporting rights, short time since deliquent, long payment history, etc) routinely sells for <10 cents on the dollar.
I work in debt collection industry so I have some contacts. Most debt will never go to court, it simply isn't worth the cost. The debtor doesn't know that though and sometimes they don't want to risk it. I have no intention on using blockchain as evidence.
No need to make it complicated:
Customer purchased digital goods worth $x.
Customer fraudulently reversed charges.
Customer is indebted to me for $y ($x + chargeback fees)
Debt sold to third party and customer is indebted to third party for $z ($y plus max legal collection fee plus max legal penalty interest with clock starting on day of purchase).
Honestly I would sell the debt for nothing. It won't help my bottom line much anyways. My goal isn't to profit from debt sale but instead to make friendly fraud punitively expensive for customers. Steal $100 in BTC from me and I lose $100 but you get are $300 in debt to someone who's business it is to extract value from deliquent debtors. Plus the fun of your credit score falling 20 to 80 points instantly, plus collection agency calls to your home, spouse, workplace, friends, etc. Remember as you noticed they are motivated to chase those high ROIs.
That remains to be seen which is why I intend to start with physical delivery.