Except that it doesn't. You still need someone to put up and maintain ATMs, apps, exchange-sites etc. that allow for quick and easy transfer and exchange of bitcoin. People think this is all easy until things go wrong: Who do you appeal to if you get scammed? What do you do if you pay someone online with bitcoin who then just doesn't deliver what you've ordered? Who do you call if someone attached some kind of skimmer to a bitcoin ATM?
Don't get me wrong, there's so much wrong with the current banking system, and I really hope someone or something manages to disrupt it, but Bitcoin is no solution to that.
Don't get me wrong, there's so much wrong with the current banking system, and I really hope someone or something manages to disrupt it, but Bitcoin is no solution to that.