What is the ratio of " Legitimate companies accept it, legitimate customers pay using it, and legitimate products are traded for it." to people using it for money laundering, ransomware and other illegitimate activities. Ransomware would probably not exist if it wasn't for cryptocurrencies.

Add the power usage, the graphic card shortage and the illegal activities and I suspect you're two to three order of magnitude larger than legitimate uses. Sooner or later cryptocurrencies will get banned, or at least fully regulated.