How Much Institutional Money Is Really in Bitcoin?  

"Whilst there are no ETFs in the US, despite the continued efforts of the Winklevoss Twins, VanEck and SolidX and Cboe Global Markets, many think it is only a matter of time before the SEC’s objections are adequately dealt with and one is approved, perhaps even within the next couple of years."

It's only a matter of time.
Cryptocurrency is a $300 000 000 000 market currently, it won't just go away like that.