If that's the argument, the writer needs to put up some numbers. Here's an attempt at some numerical estimates: http://www.bloomberg.com/bw/articles/2014-03-03

If that's the argument, the writer needs to put up some numbers. Here's an attempt at some numerical estimates: http://www.bloomberg.com/bw/articles/2014-03-03/advertisings-century-of-flat-line-growth http://www.bloomberg.com/bw/articles/2014-03-03/advertisings... Spoiler: ad spending in the US has grown roughly proportional with the growth of the economy, no bubble in sight.