"Failed" is a strong word and it's still too early to tell. Sure, I don't think it will ever be used predominantly as an exchange medium but that could be a nic

"Failed" is a strong word and it's still too early to tell. Sure, I don't think it will ever be used predominantly as an exchange medium but that could be a nice "bonus" functionality. A lot of it depends on how bitcoin-friendly governments are. For example, if a global network of bitcoin ATMs can be built, this could practically put Western Union out of business.