In a quiet but consequential move, Microsoft has opened a door that the gaming industry has long debated: access to cloud gaming without a subscription, funded instead by advertisements. Through its Xbox Insider program, the company is testing whether players will accept a modest trade — a short ad before play begins, a one-hour session limit — in exchange for streaming the games they already own or love for free. It is a wager on patience, on trust, and on whether the promise of frictionless play can survive contact with the economics of attention.