I can only really use Canadian banks because that's what Interac, Canadian system for sending money by email works with. The bank does decide what I can pay for because it limits the amount of money I can spend via Apple Pay (like $500), and in general (like $1000). You need to bring your physical card and call them to temporarily increase the limit to buy anything expensive.

Web searching a bit seems to say that e.g. tourists can use their foreign issued cards and typically carry their issuers' limits with them, unless the merchant has their own limits for some reason.

Putting stricter limits on intermediate devices like pocket computers doesn't seem very tyrannical to me. Interac's web site says the typical default limit would be 2-3000 CAD, i.e. 12-1800 euros or so, unless you have a small business account, then it's more like 25000 CAD.

If you often find yourself spending thousands of CAD on a whim, perhaps it would be a good idea to open accounts with a bank that is tailored to people with a lot of money. I'm sure there are some available in Canada.

Yeah all of that sounds way more convenient than your grandma irrecoverably losing her life savings because somebody kid fished her for her crypto authentication.