Aren't your bitcoin miners middleman in this case, and more greedy than any bank? I mean, charging $50 for $1 transfer...really???
Surely I'm not saying bitcoin is perfect! But there are other decentralized and trustless cryptocurrencies solving this specific problem in some ways without me having to trust some central corporation... I found this quite a good read actually:
https://tomluongo.me/2017/11/16/the-foundation-of-the-next-cryptocurrency-bull-market/Not saying he's right, but interesting hypothesis nonetheless...
best regards