https://www.theguardian.com/technology/2017/sep/13/bitcoin-fraud-jp-morgan-cryptocurrency-drug-dealers
It should be remembered however, that this is coming from the CEO of the company that received a $12bn government bailout. https://dealbook.nytimes.com/2008/03/18/jpmorgans-12-billion-bailout/
The problem with Bitcoin, as I see it, is that it is a commodity and not a currency. It's largely like gold, except that gold has some use outside of being a means of speculation.
While I wouldn't be surprised if Bitcoin remains marginalized, what is more important is the role that blockchain technology will play in finance in the future.
