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Right, I dug a little deeper and the original publication cited was more interesting though, it calls for merchants to accept "more than one payment method":
If you have a supermarket, shop, petrol station, hotel, restaurant, café, market stall or other point of sale establishment, it is a good idea to accept multiple means of payment, so that your customers can always pay. This makes your point of sale more resilient to disruptions in the payment system.
It's perhaps not a stretch to narrate on top of this? The only limit is what we don't try.