TV remnant inventory is usually sold at the local level and is nowhere near as large a percentage of of the pie as it is online. It&#x27;s also hard to &quot;create&quot; more inventory on TV - not so online; which is exactly what publishers do when their CPMs start to drop. They&#x27;ll add more slots for banner ads, interstitials, split articles into multiple pages... This increases total revenue for a while, but ultimately crushes your CPMs.<p>There&#x27;s a floor on TV advertising of about 16-20 minutes of advertising per hour. More than that and you start to turn your users off in huge numbers.