How are streaming content companies doing? Publishers, creators, and aggregators have traditionally made the majority of their revenue on subscriptions, so why does everyone want to talk about advertising? Ad-supported content is more affordable. Because most streaming consumers have maxed out their subscriptions, leaving the SVOD market saturated, advertising is more likely to be the dominant incremental revenue driver for streaming over the next several years, based on how media companies are talking about themselves and guiding investors.