Indeed this is good idea and before hand they already starting this trend. But as to other countries (specifically the third world country) this is somehow be in a slow process. A few only is familiar with bitcoins and other cryptos and they needed to feed some information how it works. And also the transition from their normal paying method to online e currency is somehow hard to manifest. Although in our country digital mode of payment is used but with using the regular money. So hoping for new way for it. Lets wait and see