It’s startups vs. Goliaths in a death match for a multibillion dollar market

Square, Stripe, YapStone and PayNearMe headline a jostling crowd of startups, dozens of them aiming to streamline how money changes hands. New entrants join every week, while giants such as Facebook, Apple, Amazon and Google top a list of big companies that already have substantial payments operations or who have signaled a move in that direction.