The move to a cashless society is making steady progress across most of the world. In the UK, for example, more than 50% of transactions were completed cashlessly last year (https://www.ft.com/content/18e3eb92-7201-11e8-aa31-31da4279a601), while in China, UnionPay's rapid push in to new markets (as diverse as Malaysia, DRC, and Kazakhstan https://www.ft.com/content/a67350fa-1f6f-11e7-a454-ab04428977f9) demonstrates the sheer scale of the opportunity, with the pace of change hardly altered by the introduction of a new competitor (NetsUnion https://www.ft.com/content/9e8e4f50-63ea-11e8-90c2-9563a0613e56). But there's rightly growing concern about those being left behind (https://gkstrategy.com/cashless-revolution-leaving-people-behind/) and the solutions for that problem are yet to be discovered.
https://www.ft.com/content/18e3eb92-7201-11e8-aa31-31da4279a601
UK spending on debit cards overtook hard currency for the first time in 2017