The barrier to entry is higher because the criminals need to be set up to anonymously receive an international shipment of physical currency/commodity. Apart fr

The barrier to entry is higher because the criminals need to be set up to anonymously receive an international shipment of physical currency/commodity. Apart from overcoming the logistical complexity of sending such a package (e.g. customs), the criminals would have to bribe the right officials to anonymize their physical address, which while not impossible is definitely a much higher barrier to entry than asking for cryptocurrency to be sent to some crypto wallet address, which any script kiddie can do.