I’m doing the introductory blockchain/bitcoin 101 course. Ivan talks about how there is “finality” in blockchain once a transaction is confirmed, and this prevents scamming, for example when someone buys a product, then calls the bank to do a chargeback and lies they never received the product. Or they received the wrong product. Then the person gets their money back and also keeps the product without paying (fraud).
So it makes sense how blockchain prevents the buyer-side fraud from occurring. However, he doesn’t explain the other side - how can seller-side fraud be prevented on blockchain? Once the seller receives the money, since there are no chargebacks, can’t they just run away with the money and scam the buyer?