“Traditional money transfers are relatively costly due to currency exchange fees, and can take up to a few days,"

This is the main reason why BTC is much better and will eventually take over the current banking system. There's a reason why banks are researching blockchain right now. They're looking for a way to integrate it into their outdated systems to improve them. To have something to show when their clients become familiar with cryptos and start comparing pros and cons. They will then at least be able to say that their system isn't 100% slower and more expensive than BTC, it's only 10% slower 
"-don't switch guys we are improving, give us a chance"