https://www.cnbc.com/2017/12/05/novogratz-worried-surging-bitcoin-price-may-attract-government-regulation.html

Galaxy Investment Partners CEO Michael Novogratz said Tuesday bitcoin will be difficult for governments to crack down on.

"I've got concern that if price movements go higher we're going to get more regulation," Novogratz said. But "I think it's hard to shut down. ... I don't think that's a probability."