Wire transfers have borderline predatory fees unless you're moving thousands of dollars, and there's still the issue of "oh you entered one of the numbers incorrectly, hopefully they give you your money back!"
They seem to be able to send money to bank accounts anywhere for extremely reasonable prices.
Only if flow gets too out of whack but that means their rates are too one-sided.
That’s the forex business in a nutshell. They don’t convert money, they just exchange it.