Peter Drucker says:
Decisions exist only in the present. The question that faces the long-range [technology] planner is not what we should do tomorrow, it is: What do we have to do today to be ready for an uncertain tomorrow?
For the leading and /or very large companies (hint Google / Apple, etc.) it is even more interesting, because they not only try to accommodate uncertainty, but actually influence the future. So it is not like competitions of visions, but actually competition of who and how is going to shape the future [technology]. Hm — does it make the future more or less uncertain :)?.