Going out 20 years in planning is not everyone's jam. Some people are more comfortable and interested in the translated near term sense of the future.
The value of the long view is that the depth of our aspiration, alignment and agility is equal to the length of our vision. The longer our view, the less our vision is limited by self-interest and constraints. The shorter our view, the more we will sustain different versions of the status quo. In the long view, we can create a future different from the past.