Why a limitless signal can still have a price
A broadcast signal is nonrival: one household watching it does not use up the signal or make less of it available to another. That differs from a sandwich or a seat on a train, which cannot be consumed by everyone at once. Yet providers can make a service excludable—possible to restrict to paying customers—by encrypting the signal and requiring a receiver or account with the right credentials.
Economists call something that is both largely nonrival and excludable a club good. The “club” is not necessarily a literal group; it is the set of people granted access. The lock is a business and technical arrangement, not a limit imposed by the signal’s capacity.
The lock helps pay for what the signal carries
Producing a program can involve substantial costs: planning, filming, editing, and acquiring rights. Once made, showing it to one more viewer may cost comparatively little. If anyone could receive it without paying, the provider might have trouble collecting revenue from the audience, even though the audience could still enjoy the content. A subscription turns access into a dependable source of income and gives the provider a reason to invest in programming and delivery.
That arrangement creates a tradeoff. Exclusion can support a service people value, but it also keeps non-subscribers from watching even when serving them would not crowd out existing viewers. A club good may become congested when too many people share a limited resource—think of a crowded pool—but a satellite signal itself does not run out because more homes tune in. The decisive limit is the access rule: the picture can reach a household, while the key that makes it viewable remains reserved for subscribers.
