Nikon is a super conservative company, at least on higher mgt side.
They still live in a old slow changing world.
Cheers,
Bernard
Unfortunately, camera companies don't "live" long in that world... they die (particularly if they don't sell copiers and televisions or run movie studios). By the start of 2020, both Sony and Canon will have higher resolution mirrorless bodies with more lenses than Nikon. The Z6 has some legs... it still has great video, solid autofocus and a better EVF than the A7III. But the Z7 will have lost the resolution/dynamic range crown that it inherited from the D800-810-850 dynasty that Nikon had built. In Jobsian terms, the Z7 skated to where the puck was, not where the puck was going to be. It barely (or not quite, depending on your viewpoint) caught up with the D850 and A7RIII. One hopes that Nikon engineers knew that and planned for a relatively quick refresh swapping in an upgraded sensor and EVF. Whether the bean-counters will allow that to happen remains to be seen, but if the Z7 isn't updated in the next year, Nikon will have lost the lead they had built with the D8xx series, perhaps for good. This possibility saddens me.
Glenn