Broadcast television reported audience figures as a matter of routine, and streaming services spent years reporting almost nothing. The silence followed from what a subscription business is actually selling to its customers.
Advertising forced disclosure, subscription does not
A network selling advertising has to prove how many people saw the advertisement, because that is the product being sold. Measurement existed to settle that transaction between broadcasters and the companies buying time.
A subscription service sells access rather than attention, and the customer paying is the viewer. No third party needs an audited audience figure, so the reporting apparatus never had a reason to exist.
What replaced it internally is retention, meaning whether a subscriber continues paying. A title with a modest audience that prevents cancellations can be worth more than one that draws a crowd and changes nothing.
Published numbers would help competitors most
Detailed performance data tells rivals which genres are underserved, which talent draws an audience and what a platform overpaid for. That is competitive information given away for free.
It also shifts negotiating power towards creators and agents, who could price their next project against demonstrated results rather than against a platform's private assessment of value.
The metrics that did appear are chosen carefully
Services eventually began publishing selective figures, usually hours viewed over a fixed early window. Hours favour long series and say nothing about how many distinct people watched.
A short film and a long season producing the same hours represent completely different audiences, so the measure flatters certain formats and obscures others by design.
Counting rules matter as much as the totals. A view triggered after a couple of minutes measures sampling rather than watching, and the threshold is set by the platform reporting it.
External measurement filled part of the gap
Independent panels and device-level measurement now estimate streaming audiences without platform cooperation, which is why third-party rankings exist alongside official announcements.
Those estimates are imperfect and usually cover one country, but they are consistent across services, which makes comparison possible in a way that self-reported figures never allowed.
Advertising tiers changed the incentives again
Once services began selling advertising alongside subscriptions, they acquired a buyer who requires verified audience figures before committing money to a slot.
That has pushed platforms towards accepting outside measurement for the advertising portion of their business, while the subscription side remains as private as it ever was.
The result is a split disclosure regime, where the numbers a service publishes describe the part of its business that has to answer to someone else.