The Population Pyramid
The last 500 years the world has had enormous human population growth, which is roughly the same period of "proof" that over the long term the markets are a good investment.
I think (I haven't done the research to say for sure) population growth has exceeded market growth, at least that is what my number sense suggested to me just glancing at data on the two. Indeed, that population graph for the 20th century looks almost straight up.
So, where does your business and market growth come from? The real business growth comes from expanding sales which can be done with increasing population. Then there is the "growth" due to increasing money supply or inflation, which is not really a true growth but more of a keeping up with the money supply.
So, the world truly has a mature population now. And for that matter, because the population is so large now the rate of growth has declined.
The world is finite and we don't have business data on what happens with a declining rate of growth, nor do people seem to be considering this in their investment decisions. The ability to expand into new markets is declining as many markets are well developed now and population growth is declining.
I do not see how business experiences growth in the future as it has in the past. New markets and vertical population growth gave business the opportunity to grow by expansion, but how do these business do in an environment where the expansion part of the business is likely over or at least very limited?
And what happens with a declining population? Certainly that is a possibility when you consider the over crowded conditions in many places and the lack of clean water.
I have seen little or nothing on considering investments with world population and I think that those who start thinking this through are going to make the better investment decisions in the future.