"How do they convert it into local money they can spend? " As Bitcoin adoption increases, there is less and less need to convert it. Today 160k+ merchants accept it. 8 years ago it was 0.
"* 7 transactions per second worldwide total means Bitcoin couldn’t cope with...*" This limit is obviously not set in stone and will increase one way or another: segwit, block size increase, payment channels, etc.
Bitcoin, being electronic, precisely helps with people being far away from bank branch offices.
Bitcoin SPV wallets run on $10 Android smartphones. No need for an "expensive computer".
"Bitcoin is way too volatile to be a reliable store of value" Still better than being unbanked/underbanked. Also, volatility has been decreasing: https://mobile.twitter.com/lsukernik/status/8649208737189519...
"How do they convert it into local money they can spend? " As Bitcoin adoption increases, there is less and less need to convert it. Today 160k+ merchants accept it. 8 years ago it was 0.
"* 7 transactions per second worldwide total means Bitcoin couldn’t cope with...*" This limit is obviously not set in stone and will increase one way or another: segwit, block size increase, payment channels, etc.