One of the most important metarial to human is food. And the world's needs for food will greatly increase. After that, the opportunity cost will be increased than now. Therefore, a few big private investors are starting to make bolder and longerterm bets. I think this is the one example of comparative.
Wheat, corn and soybeans are important food in the world people. However, the supply of them is enough now. Therefore, the few investors are starting to investe to other metarials because wheat, corn and soybeans opportunity costs are not bigger than the others.
Huge investment funds have already poured hundreds of billions of dollars into booming financial markets for commodities like wheat, corn and soybeans. But a few big private investors are starting to make bolder and longer-term bets that the world’s need for food will greatly increase — by buying farmland, fertilizer, grain elevators and shipping equipment.