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.A Brief History of the Corporation: 1600 to 2100 (via Futurismic)
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.
Sure, there is an equivalent to the Sun in the picture. Just ask anyone who has tried mindfulness meditation, and you'll understand why the limits to attention (and therefore the value of time) are far further out than we think.
The point isn't that we are running out of attention. We are running out of the equivalent of oil: high-energy-concentration pockets of easily mined fuel.
The result is a spectacular kind of bubble-and-bust.