The question is, can they let go of their paradigm?
Someone will put enough of the required sensors into one unit to make it useful. Carrying a Kestrel, rangefinder, GPS, and a PDA is nuts. Not from weigh but just trying to handle them all. Those functions might as well all be the riflescope since it's needed regardless.
If someone invents a portable kilojoule laser first it will make drop, inclination, windage, and rangefinding irrelevant.