Mobile network operators (MNOs) worldwide billed their customers over $20 billion last year on behalf of sellers of apps, games, and streaming services such as Google, Microsoft, Apple, Spotify, Samsung, and Amazon. Less than 50% of the value of those sales are processed through direct payment acquiring contracts between the MNOs and the sellers. About 90% of the sellers connect to the MNO by way of third-party payment facilitators that focus on carrier-based billing. Among those third-party providers is publicly traded (London Stock Exchange) Bango. The company has doubled payment volume p...