Originally Posted by
wufwugy
That's a great question. It's one I've thought some on. I've not seen the idea addressed specifically in economics and I don't think anybody knows the answer.
My idea for what's going on is that nobody knows how to quantify it. The more variables and the longer projected time, the more models fall apart. Smart companies certainly are not relying on models to determine how they should act now due to what they think will happen in 10, 20, 30 years*. The time value of money really throws this through a loop. For example, even if investors think that a gain of 1% profits today will result in a loss of 2% profits in 20 years, they make much more if they take the 1% gain now (because interest). Also, a company that makes more money now gets better at what it does, can expand more, can diversify more, and can innovate more. For example, if Comcast has some investment ideas that require a tremendous amount of capital but fundamentally change/strengthen the company, increasing profits now to make that happen can have a net positive result even if their initial business sees a decrease in profits later because of it.
Illustration of the above: if I invent the shovel and hire people to shovel things for customers, I make some sweet profits. But if I add to my business manufacturing of shovels and sell them to many more customers so they can shovel themselves, I make way more profits despite it decimating my original shovel-laborer-for-hire business.
On a more philosophical level, a decrease in profits due to how the market changes due to the profit-increasing behavior of companies is more an unintended consequence in the view of those companies. As we see in other markets, the consequence isn't enough such that the initial increase in profits is a net negative. If that was the case, profits would actually be losses.
*That's not to say that market prices don't reflect what the markets currently think about what will happen 10, 20, 30 years from now. It's common to think that markets only think in short term, but I estimate that is not true. The efficient market hypothesis (which is the standard used today) posits that current market prices do reflect what people think about any time in the future. An example to make it obvious: if we all thought that aliens are going to invade and try to wipe us out in 2075, market prices would be much different today than they are.