What makes bitcoin a great investment to a lot of off shore investors is that it can easily be transferred quickly without a middleman.  Banks are able to freeze your assets but with bitcoin you are the sole owner and no one can freeze or seize your btc.

This past year people kept saying institutional money was coming but I think it will take a few years for mainstream investors to enter the crypto world.  It's a great hedge against real estate and fiat money which can implode at anytime.