It doesn't appear to be true if you check websites of Canadian banks (e.g. CIBC, RBC, BMO, Scotia…) they all offer Visa and Mastercard, and Scotia even also off

It doesn't appear to be true if you check websites of Canadian banks (e.g. CIBC, RBC, BMO, Scotia…) they all offer Visa and Mastercard, and Scotia even also offers Amex as well.