Whilst it's clear that Nikon most likely doesn't have the R&D budgets of say Canon and Sony (they are after all
much bigger companies making more than just photo equipment), it's still quite commendable in my eye, that since the launch of the Z series in September 2018 (so 17 months), Nikon have launched (or about to launch),
- 3 Z bodies (Z6, Z7, Z50)
- 2 DSLR's (D780, D6) - both imminent.
- 9 Z lenses (11 including the 2 DX ones),
- 2 F mount lenses (500mm F5.6 PF and the new 120-300 F2.8)
- 12 further Z mount lenses already committed to this year and until the end of next year.
Also, who knows how many bodies they are working on was well. Maybe also there's a D850 replacement being developed, and surely more Z bodies in the pipeline.
Just looking at the Z lenses for a moment - to have 11 lenses for a new mount ready to market in under 18 months since initial launch, it pretty creditable.
For a company as relatively small as Nikon, that's quite an accomplishment in less than 18 months. I'm not saying Nikon are doing everything right (clearly they can make some very bad or peculiar decisions) , or that financially they will be OK in the long term, but it seems they really are pushing on at a pace with new product developments.
Also, the flip side is that I sometimes think launching new products one after the other to supersede the previous model in a short timescale is counter productive, as it just p***es off those that just invested in a body or lens all to have it superseded in 12 months or so.
Much better in my eye to get the model as right as possible before launch then mature it over 2-3 years with meaningful firmware upgrades to prolong it's life (like for instance as Fuji and Olympus do very well). To be honest, in the 17 months since launch as well, the Z6, and Z7 have already received some quite major firmware upgrades as well, without people having to dump their body after a short amount of time to "upgrade" to the latest and greatest.