while I don't necessarily agree with the extreme negative view of crypto (though I definitely don't have a positive view), this is already a commonly practiced

while I don't necessarily agree with the extreme negative view of crypto (though I definitely don't have a positive view), this is already a commonly practiced thing called Pigovian taxation: https://en.wikipedia.org/wiki/Pigovian_tax https://en.wikipedia.org/wiki/Pigovian_tax