Many of the commentators that are prophesying the demise of BTC do not understand the paradigm shift that is going on in finance. If the argument is that BTC and cryptos are only used for "dark net" activities such as tax fraud, drug dealing and criminality then the esteemed professor is ignoring the fact the fiat currencies are also used to a much greater degree to fund these activities. Using this logic does that mean all fiat currencies are also worthless? I think peer to peer financial transactions will only increase and cryptos not fiat will be the currency of these transactions. Consequently I think that long term the crypto market cap will go up not down.