Your new definition of "existing" to mean what is extant 5-6 years from now thus means there will be no innovation from now,or present time, to a time beyond 5-6 years from now . That thesis does not hold water either, IMO.
ciotera, "...long-term opportunity in this space is limited..." is true only if we all lose our ability to initiate and improve. The limit is lack of creativity and imagination on the part of all participants in the field of endeavor