Lawyers for BMO and Ernst & Young said banks are uncomfortable handling money from the crypto world because of money laundering fears.
source https://www.google.com/url?rct=j&sa=t&url=https://vancouversun.com/technology/blockchain/quadrigacx-case-canadas-big-banks-wary-of-cryptocurrency-assets/wcm/82687ca4-819f-4e6b-8fb3-9b9449e0ae66&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNGRMSGB2OdTk4088hYRLlWP1pStaw