I echo Erik's remarks in post #70, that many of us don't care who makes it, if it works to our needs. I have many really good lenses available to me, and I seldom use any of the many Nikons, with the exception of some of their exotic industrials. I do close-up and macro work for the most part.
I have been corresponding with Zeiss technicians for months asking after an Otus macro lens. What they tell me is they have to be able to sell 10,000 of them to make it worthwhile, not in their opinion likely with a macro. Perhaps they will change their mind now that they see the demand for the Otus 55mm.
Small companies, like Voigtlander, make excellent lenses. In fact, Voigtlander lenses are made in the same building as most Zeiss lenses, just in another area of the factory, I am told.
The Voigtlander 125mm F/2.5 APO-Lanthar is a wonderful lens, if you can find it, right up there (but not as corrected) with the Zeiss Otus 55mm. I have hoped for years that Nikon would get on the bandwagon and correct their lenses. It is not that they cannot do it.
I have three Printing Nikkors that are highly corrected, plus the El Nikkor APO 105mm lens that is very nice as well, and so on. They can do it if they want to.
I am open to whatever works for me. I tried out (and returned) both the Sigma Merrill DP3 and the Sony A7r cameras. Great strides forward, but still not all of what I need in one package. I would like a pro-Nikon body with a 54MP sensor, and superb EVF,and no AA filter.