Are you wondering when cryptocurrencies become widely adopted? Here is the word from the horse's mouth

A good barometer for the magnitude and importance of cryptocurrencies has been words from bankers going through five stages of grief, denial, anger, negotiation, acceptance that Andreas Anthonopolous describes :

And now there is a more articulate report corresponding to the final stage, acceptance, as they are starting to admit cryptocurrencies will drive down banker's profits.

"Both financial institutions and their non-banking competitors face the risk that payment processing and other services could be disrupted by technologies, such as cryptocurrencies, that require no intermediation," states JP Morgan's annual report, adding that "increased competition may negatively affect our earnings by creating pressure to lower prices."
https://seekingalpha.com/news/3335085-jpmorgan-warns-crypto-threat-business

This however, is only a partial admission. Last year the head of this bank was in the stage of anger and denial, calling bitcoin "stupid" and "fraud".