Scams will always exist, so long as there are things of value and humans are involved. See different unofficial currencies used in prisons.
When it comes to scams, part of the scam is aiding the victim to making a transaction in a way that can’t be reversed. Cryptocurrencies, call cards, gift cards, even in-game currencies for online games. As long as it is liquid and carries a value, some entrepreneurial scammer will try to use it to increase their profit. Official currency transfer channels (banks, remittance centers) are usually the focus of laws and law enforcement, so scammers know to move to other forms of value. Cut-outs and fences are common in many forms of scams because these are tools that help them avoid the banking systems until the scammed value is laundered.
