50% is a guess based more on the linked article that shows the internet share of advertising&#x27;s growth rate is slowing down (<a href="http:&#x2F;&#x2F;images.bwbx.io&#x2F;cms&#x2F;2014-02-28&#x2F;ADS_revenue-after-5-years.jpg" rel="nofollow">http:&#x2F;&#x2F;images.bwbx.io&#x2F;cms&#x2F;2014-02-28&#x2F;ADS_revenue-after-5-yea...</a>).<p>Also look at the linked graph from the 1.29% article: <a href="http:&#x2F;&#x2F;images.bwbx.io&#x2F;cms&#x2F;2014-02-28&#x2F;ADS_medium_share2.jpg" rel="nofollow">http:&#x2F;&#x2F;images.bwbx.io&#x2F;cms&#x2F;2014-02-28&#x2F;ADS_medium_share2.jpg</a><p>Each generation of advertising takes over more, but magazine, radio, are remarkably robust. TV will remain too (even if some transfers to Hulu&#x2F;Netflix&#x2F;etc...).