> Cryptocurrency being in use means people perceive the cost of using them being less than the benefit from using them. Most of the cost isn't born by those wh

> Cryptocurrency being in use means people perceive the cost of using them being less than the benefit from using them. Most of the cost isn't born by those who benefit from it, it's an externality to them. > If the problem is the carbon emitted for power generation, then tax the carbon emissions (which already happens in lots of jurisdictions). There's still the opportunity cost of available low-carbon energy being frittered away on cryptocurrencies instead of something more useful.