Venkat Rao argues that a finite amount of attention will doom the corporation:
Take an average housewife, the target of much time mining early in the 20th century. It was clear where her attention was directed. Laundry, cooking, walking to the well for water, cleaning, were all obvious attention sinks. Washing machines, kitchen appliances, plumbing and vacuum cleaners helped free up a lot of that attention, which was then immediately directed (as corporate-captive attention) to magazines and television.
But as you find and capture most of the wild attention, new pockets of attention become harder to find. Worse, you now have to cannibalize your own previous uses of captive attention. Time for TV must be stolen from magazines and newspapers. Time for specialized entertainment must be stolen from time devoted to generalized entertainment.
(Hat tip: Kottke)