PhonePe
“PhonePe built India's most successful UPI success story — 700 million users, 50 million merchants, and transaction volumes that make Visa nervous. The beautiful irony is that their crown jewel sits on infrastructure they don't own: UPI belongs to NPCI, the rails are NPCI's, and the moment those rails get an AI layer that eliminates the need for an app entirely, PhonePe becomes a very expensive branded wrapper around a commodity pipe.”