In the same breath that Warner Bros Discovery revealed plans to push deeper into free ad-supported streaming TV, Disney is joining in the fun, announcing the roll-out of an ad-supported tier of Disney+ in the US from early December 2022 and internationally from 2023. The date is critical, as it will see Disney beat both WBD and Netflix to the ad punch, by many months. Taking in the bigger picture, it seems strange to frame this as Disney getting a head start in ad-supported content given the abundance of free content already out there. Nonetheless, a head start it is against these two major rivals, although we reserve that Disney has a history of rushing things to market before the…