It's not that simple. Many (most?) chargebacks on porn and gambling sites are fraudulent. The wife sees porn charges and the husband pretends his card was sto

It's not that simple. Many (most?) chargebacks on porn and gambling sites are fraudulent. The wife sees porn charges and the husband pretends his card was stolen or the gambler loses his bet and pretends his card was stolen, etc. Then there are sites that sell things which are easily fencable, say gold coins or foreign cash. Most of the chargebacks there are not because the merchant is fraudulent, but because the cards were stolen. Without an irreversible payment method, this whole class of product cannot be sold online.