For example, say someone had a 100 BTC Pirate account. They had the option of selling it for 30 BTC. But instead, they bet 100 BTC with Matthew. Now, consider what happens if Pirate defaults and Matthew does not pay:
1) With Matthew's bet: Thee 100 BTC Pirate account is worth zero. They get 0 BTC from Matthew. They wind up with 0 BTC.
2) Without Matthew's bet: They have to 30 BTC they got from selling their Pirate account.
So in this case (which is not atypical) Matthew's failure to pay off the bet would cost this person 30 BTC. If he loses but does not pay, money will be lost.
ObLegal: Promissory estoppel, detrimental reliance, favete linguis.
Estne volumen in toga, an solum tibi libet me videre?