[abfunders]

Someone in Colorado on Friday had a PIN Debit ATM system went down. Not the 1st time, nor will it be the last.

Two sides to the equation - a customer cannot utilize his/her Visa/MasterCard for an illegal product/service.

The issuing Bank has the control - I'm sure you recall when BOA & Chase informed their customers they could not purchase Bitcoin using their Bank Issued Cards.
https://cointelegraph.com/news/bank-...d-purchase-ban

Something's wrong with your post:
1) Pot's not illegal in Colorado
2) I was talking about a non-ATM system, you responded about an ATM system
3) One person got shut down - That's a classic fallacy of logic, both for proving and disproving by example. Show a trend and we'll start talking.