Netflix just crossed 250 million monthly active viewers on its ad-supported tier. That’s up from 190 million in November 2025 - 60 million new viewers in six months. In the same week, YouTube held Brandcast 2026 and announced a stack of AI tools: from generating video ads from a creative brief to enabling two-click purchases directly on TV screens.
Two announcements in one week, one clear signal: streaming is the defining advertising channel of this decade - and AI is picking the winners.
YouTube bets on creators plus AI production
Brandcast is YouTube’s annual event for advertisers. This year’s focus split between creator partnerships and AI production tools.
The standout data point: when creators mention products on YouTube, viewers are 13x more likely to search for the brand and 5x more likely to make a purchase compared to standard ads (YouTube, 2026). YouTube built a product around this with Custom Sponsorships - using AI to automatically pair brands with creator content at the right cultural moment, removing the need for direct creator deals.
On the production side, Multimodal Video Creation uses Gemini, Veo, and Nano Banana to move from creative brief to finished video with a few prompts. It’s a direct answer to the biggest barrier for smaller advertisers: production cost and speed.
The results from 60+ AI improvements on Demand Gen: a 26% increase in conversions per dollar year-over-year (ALM Corp / YouTube Internal Data, 2026). CTV ad conversions grew 200%+ year-over-year in Q1 2026. The Masthead with Custom Content Shelf drove 46.4% higher attention capture than comparable placements.
Netflix: from content platform to ad machine
Netflix isn’t following YouTube’s playbook. They’re running a different strategy entirely.
Rather than investing in creator tools or AI creative, Netflix is building programmatic infrastructure. Nearly 50% of non-live ad inventory is now sold programmatically. Ad revenue target for 2026: ~$3 billion. Target for 2030: $9 billion (Agile Brand Guide, 2026).
The genuinely new move: Netflix is launching AI agents to manage and purchase ad campaigns. Instead of advertisers manually optimizing campaigns, AI handles the full operation. With 4,000+ active advertisers - up 70% year-over-year - this is a scaling bet: more advertisers, less friction, machines handling most of the execution.
Two platforms, two opposing models. YouTube wants you there to create and connect with creators. Netflix wants you there to buy inventory as efficiently as possible - and AI handles the rest.
Vietnam: 91% CTV penetration, but marketers haven’t caught up
Here’s the data point that matters most for Southeast Asian marketers: CTV penetration in Vietnam reached 91% in 2025 (AVIA AVB 2026 Report). Smart TVs are in the majority of middle-income households. The audience is there.
Advertiser adoption hasn’t followed. Open programmatic CTV ad spend across Southeast Asia surged 43% in Q1 2025 versus 2023 (Mission Media Asia) - but most of that spend still comes from regional campaigns by international brands, not local advertisers.
57% of APAC marketers have already shifted at least 40% of budgets to CTV. Vietnam is roughly 1-2 years behind this trend. That’s both a risk (missing the early mover window) and an opportunity: the playbook from other markets is validated, infrastructure is in place, and AI is actively lowering entry barriers.
The real bottleneck is creative, not technology
All these AI tools - Gemini generating videos, Netflix’s agents buying media - work best when the creative is right to begin with.
This is what many APAC marketers are missing. CTV is not a channel for resizing mobile video and running it as-is. A 55-inch TV screen in a living room demands entirely different creative: wider shots, text large enough to read from 3 meters away, slower pacing, and a call-to-action clear in the first few seconds.
YouTube is addressing this with Multimodal Video Creation - but even the best AI tool can’t fix a wrong brief. Netflix is expanding to 15 new markets in 2027 and deepening its programmatic infrastructure. The entry barrier is dropping, but only for advertisers who already have TV-native creative ready.
The practical question: before allocating budget to CTV, do you have creative that was actually built for a TV screen?
NateCue's Take
Vietnam's CTV penetration hit 91% - but most local marketers are still running mobile-cut-down creative on TV screens. That's the biggest mismatch in the market right now. Netflix's AI agents dropping entry barriers sounds promising until you realize the bottleneck isn't buying - it's having TV-native creative that actually converts. YouTube's Custom Sponsorships (AI-matched brand moments with creators) is the more accessible play for APAC markets not deep in programmatic. The brands winning CTV right now aren't outspending everyone - they're out-creating them.