If paypal only allowed users to pay for things in USD it would also greatly defeat the purpose of Paypal. Instead, they offer automatic conversion (at a rate f

If paypal only allowed users to pay for things in USD it would also greatly defeat the purpose of Paypal. Instead, they offer automatic conversion (at a rate favourable to them no doubt) from other currencies. They certainly wouldn't say "If you hold EUR you can take it to a currency exchange and change it for USD, then send it to us". They would have no global hold if they did that. Likewise, barring access to users of a certain national currency damages the global utility of that country's currency; it's silly of them to do that if there are no regulatory obstacles, and I'd argue they're strongly incentivized to find ways around those obstacles. Whether it's paypal or not, it's greatly useful to have some way to pay for things with cryptocurrency, and payment companies have an economic incentive to add support for crypto payments as well