Bitcoin price: 2013 “too expensive” 2014 “too expensive” 2015 “too expensive” 2016 “too expensive” 2017 “too expensive” 2018 “too expensive” 2019 “too expensive” 2020 “too expensive” 2021 “too expensive” Bitcoin is always “too expensive” for those who don’t believe.
there's no plausible way to run even, say, visa, over bitcoin. maaaaaybe down the line on some proof of stake or proof of storage or proof of space-time system you can get higher throughput and less energy usage, but right now bitcoin is in addition to the financial sys

bitcoin is a replacement for neither!