eMarketer: US advertisers will spend $11.36B on streaming TV commercials on services like Hulu, Pluto TV, and Peacock in 2021, up from $8.11B in 2020
Context & Ripple Effects
This forecast lands midway through a longer migration of US ad dollars onto the internet: back in 2018, online ad sales had already crossed more than half of all US ad sales, and streaming video was the next inventory pool waiting to be tapped. eMarketer's numbers put Hulu, Pluto TV, and Peacock at the center of that tap-opening moment.
The trajectory has since confirmed itself — Ampere now projects the US streaming ad market reaching $17B by 2025, with even Netflix running an ads tier — which makes the 2021 jump from $8.11B to $11.36B the inflection where ad-supported streaming stopped being an experiment.
First-order effects
- Hulu, Pluto TV, and Peacock gain roughly $3.25B in incremental annual ad revenue versus 2020, giving them a funding source independent of subscriber fees.
- Advertisers reallocating those dollars are buying addressable, data-targeted TV inventory for the first time at scale, directly pulling budget away from linear broadcast buys.
Second-order effects
- As subscription revenue growth decelerates — PwC already flagged US streaming subscription revenue growth cooling from 19.5% to 13% ($25.32B expected in 2022) — ad income becomes the margin lever services lean on, pressuring rivals without ad tiers to add them.
- Larger ad coffers feed the content arms race: Ampere later projected streamers would outspend commercial broadcasters on content for the first time, with the major platforms committing $23B+ annually — spend that ad revenue helps underwrite.
Third-order effects
- If the pattern holds, US television splits into a hybrid model where nearly every major streamer runs both subscriptions and ads — validated by 2025 projections of a $17B streaming ad market and 24% of US Netflix subscribers choosing the ads tier.
- Commercial broadcasters face a structural squeeze: they lose ad dollars to streamers while being outspent by them on programming, shrinking their role to content licensors and legacy reach.
The trend: US streaming is evolving from pure-subscription businesses into hybrid ad-and-subscription platforms, with advertising becoming the primary growth engine as subscription growth flattens.