There's a wave of this sentiment lately— which is funny timing. Goldman Sachs apparently will have an operational cryptocurrency trading desk by the end of June.[0]
The TSX is slated to have a cryptocurrency brokerage desk with backing of the Bank of Montreal over the coming months sometime as well.[1] This came out days after BMO blocked all cryptocurrency purchases with consumer credit and debit cards.[2]
The more cynical side of me wants to guess that they're trying to establish a gatekeeping initiative. Knock everybody about, then when they want back in they have to come through you.
[0] https://www.bloomberg.com/news/articles/2017-12-21/goldman-i...
[1] https://www.newswire.ca/news-releases/tmxs-shorcan-announces...
[2] http://business.financialpost.com/pmn/business-pmn/bmo-stops...