Ghost Audiences Are Inflating CTV's Numbers

Nearly half of US premium SVOD accounts — 48% — were ad-supported in Q1 2026, and 59% of new subscriptions in the quarter chose ad tiers, according to Antenna. Yet the industry still prices those audiences with metrics built for a bygone era.

The scale is real. US ad-supported premium SVOD subscriptions hit 110 million in Q1 2026, up from 53 million two years earlier. CTV upfront spend surpassed linear for the first time this year. Global CTV ad revenues are projected to nearly double, from $44 billion in 2025 to $81 billion by 2030.

But subscriber counts, monthly active users and platform reach tell advertisers who signed up — not who is actively watching and reachable. The result is a widening gap between reported audience size and the supply buyers can actually bid on.

Samsung Ads recently quantified the problem. Two of every three new viewers who downloaded a streaming app to watch NFL games during the regular season had "ghosted" the service after the season ended — nearly twice the churn rate of existing users.

Those ghost audiences still count toward platform metrics while contributing little or nothing to campaign-ready inventory. In short: a big audience isn't the same as an available one.

What should replace audience size?

The piece lays out a four-part framework for thinking about the gap:

• Audience size is potential — the number of consumers with access to a service. MAUs and subscriber numbers signal platform scale, not advertising opportunity.
• Ghost audiences are inactive subscribers — people who stay subscribed but don't watch during meaningful three-to-four-month campaign windows.
• Audience availability is presence — consumers actively watching while a campaign runs. This is what planners should target.
• Audience addressability is transactable inventory — the subset of available viewers who can actually receive ads.

The closer buying moves to the impression, the costlier it becomes to confuse these categories. An audience can be large but unavailable, or available but not addressable.

Viewer loyalty compounds the problem. Loyalty runs to the show, not the app — once a season ends, audiences move on. The dynamic is less severe in FAST, where viewers move freely between channels without a paid subscription, but it hits subscription apps hardest, since lapsed viewers have a financial incentive to cancel.

The question marketers should ask media partners has changed accordingly: no longer "How big is your audience?" but "How much of your audience is actually showing up?"

Why does the sell side hold the advantage?

Audience curation is migrating to the sell side, where OEMs, SSPs and publishers use deterministic viewing data and real-time signals to see who is watching at the glass level. As selling moves closer to the glass, these players are evolving from distribution partners into intelligence partners, enriching inventory with viewing signals that determine the value of every impression before it reaches the auction.

In that environment, competitive advantage won't come from reporting the largest audience. It will come from identifying the best available audience at the exact moment an impression becomes available — which makes the strongest combination of reach and availability the next currency in streaming.