(1) Not everyone has a financial advisor. Also, mass emails may not constitute financial advice. Living in various countries of Latin America, my uncles and aun

(1) Not everyone has a financial advisor. Also, mass emails may not constitute financial advice. Living in various countries of Latin America, my uncles and aunts have always had in mind the USD as a unit of account and an alternative savings medium. Not all of these people were intellectually sophisticated or "good with money" necessarily. They'd either struggle with baskets of currency or bear an additional cognitive/stress load that would make them worse off. 2) At a more formal setting where cashflow projections are made and international investors placated (and so on), having forecasts be conditional on both USD and euro is already commonplace, particularly if there's lots of intercontinental logistics implicitly baked in costs and revenues. Adding another currency to these types of calculations (also backed by econometric models, commodity price forecasts etc) would not add 50% complexity, it would pretty much double it. I can't imagine being responsible for a cashflow in four or five currencies at a scale in which exchange rate volatility matters. This isn't to say there wouldn't be benefits, but surely there'd be costs.