I’m back from Davos, and last week seems like a blur. As I wrote previously, the opportunity for business to align purpose with social good was a hot topic. Our CEO, Ajay Banga, who spoke on a panel about “Money and Markets in a Hyper-connected World” made the connection. One might think the focus would be on currency fluctuations or stock market trading, but it was actually about how innovations in payments technology can open doors of economic opportunity for those currently excluded....