Dream Unlimited, a major Canadian landlord, has faced accusations of using AI software, YieldStar, to advise on rent increases, leading to massive rent hikes. The U.S. government is currently suing the software's developer, alleging it facilitates collusion among landlords to artificially inflate rents, which could violate century-old antitrust laws. Tenants at properties of Dream Unlimited in Toronto have been significantly burdened by these rent increases, and some organized a rent strike.