Nearly every large American streaming service now sells a cheaper plan carrying advertisements. The change was driven by arithmetic about what a subscriber is worth rather than by generosity.
Subscription growth ran out of room
Domestic subscriber growth slowed once most households that wanted a given service had one. Growth then had to come from price increases or new markets.
Raising prices on a saturated base increases cancellations, and each cancellation costs the future revenue of a customer who was already acquired.
An advertising tier reaches a different household: one that declined at the higher price. It converts a nonsubscriber into revenue without discounting the existing base.
Two revenue streams can exceed one
An ad-supported subscriber pays a lower fee and generates advertising income on top. Combined, that can equal or beat the premium plan.
Whether it does depends on how many advertising slots a viewer sees and what advertisers pay for them, which varies with the show and the audience.
Heavy viewers are especially valuable on an ad tier, since more viewing means more inventory. On a flat subscription, heavy viewing is a pure cost, because delivery and rights payments rise while the monthly fee does not.
Streaming inventory sells at a premium to broadcast
Advertisers pay more per viewer for streaming because the audience can be targeted by household and the delivery measured with precision broadcast cannot match.
Ad loads are also lighter than traditional television, which keeps the experience tolerable and supports higher rates for each spot shown.
The constraint is supply. A service must have enough ad-tier viewing hours to sell against, which is why platforms actively steer new signups toward the cheaper plan.
Pricing is designed to move people deliberately
The gap between tiers is a lever. Widen it and more subscribers accept advertisements; narrow it and more pay for the clean version.
Services adjust that gap according to which subscriber they currently want, and the ad tier is frequently the plan promoted in acquisition campaigns.
Removing or repricing the cheapest ad-free option is the same lever operated from the other end, pushing price-sensitive households down rather than out.
Rights and reporting had to change with it
Older content licenses did not contemplate advertising insertion, so some titles cannot legally run on an ad tier without renegotiation.
Talent agreements raise similar questions, since compensation formulas written for subscription services do not map cleanly onto advertising revenue.
Measurement had to be rebuilt as well. Advertisers require independent verification of delivery, which forced services that disclosed almost nothing to open their viewing data to third parties.