For Yen and Euro it makes less sense since these are relatively stable, but for less stable currencies that is actually a thing. The definition of gambling you

For Yen and Euro it makes less sense since these are relatively stable, but for less stable currencies that is actually a thing. The definition of gambling you are talking about is built into our monetary system. I give you the point that it is harder (not impossible) to enforce any regulations on these currencies. It's like cash in that sense, but it has easy access and there are plenty of options of cash, which is unlike regular cash.