The ad-driven model will show as many ads as possible, while making the user experience just barely tolerable. Usually, they forget about remaining tolerable -

The ad-driven model will show as many ads as possible, while making the user experience just barely tolerable. Usually, they forget about remaining tolerable -- see popups, animated GIFs, Flash ads, etc. -- and get slapped down by technology that actually serves the user. See also the VCR, which let people record TV shows and fast-forward through the ads. Ad-driven media will always cannibalize itself.