It’s 1 a.m. and the Monopoly Go global chat is on fire. “Need Lucky Cat, have doubles of Snow Parade!”“Willing to trade Legendary Joker — DM FAST.”Someone just created a five-player sticker loop, all working to complete sets by rotation. This isn’t just a game anymore. It’s a sticker stock exchange, running 24/7 with its own rules, etiquette, and...