Ad-supported entertainment streaming runs on CPM logic: revenue scales with eyeballs, so a channel needs a large audience before it's economically viable at all. Commerce streaming breaks that constraint — a livestream that sells product directly can be profitable with a fraction of the audience an ad-supported channel would need, because revenue comes from transactions rather than impressions.
Tom Verrilli (Whatnot CPO) uses this to head off a specific comparison mistake: judging a commerce livestream's health by entertainment-platform viewer-count thresholds. A show with a small but buying audience can be a commercial success even though it would be a rounding error on a CPM sheet.
Related: E-Commerce's 20% Ceiling & the Agentic vs. Social Commerce Split (live/social commerce as a structurally different category from catalog e-commerce), Asset-Light, Just-in-Time Retail Model.