Wall street is already considering buying Bitcoin:
http://www.zerohedge.com/news/2017-10-02/goldman-shuns-jpmorgans-dimon-plans-bitcoin-trading-operation
As you see, their interest is obvious. Jamie Dimon can say whatever he wants, meanwhile Morgan Stanley and Goldman Sachs are showing clear evidences of being bullish on bitcoin. They know they can't ignore this or else they will look like massive idiots in 10 years and probably bankrupt as well.
And so is Jamie Dimon and JPMorgan/Chase despite what he publicly says. There does seem to be a concerted effort to bundle a bunch of so call bad news in packages at times perhaps in an effort to drive price down so big players can load up. I am not saying this was his intent, but if there is money to be made then you can be sure bankers will be interested in it. The crypto space doesn't yet quite have the volume that these big players need, but that will come as time goes on and I am sure in 5 years or so if he is still at the helm his outlook will have changed a bit.