Debt comes with risk and reward: you give some money, get some interest, and maybe the principal back. The amount of interest depends on the risk. Usually nothi

Debt comes with risk and reward: you give some money, get some interest, and maybe the principal back. The amount of interest depends on the risk. Usually nothing happens, and you get everything back, but sometimes you don't. That's business. If you want some "strict, enforceable and unavoidable means to collect it", you are not talking about debt as we know it. There is no business with a profit margin and 0 risk. Well, there is actually: the ones the private lenders made with Greece, before unloading their financial instruments onto the European governments