You may be right, lora-to. Right or wrong, I look at the listing order of what a maker is producing. After a good rundown on Carl Zeiss's history, the Zeiss Wiki page lists as follows:
'Semiconductor lithography equipment, light, electron and ion microscopes, coordinate-measuring machines, medical devices, eyeglasses, binoculars, spotting scopes, telescopes, planetarium projectors, and other optical equipment.
As you suggest, that looks like a lot of high profit lines, far more lucrative, certain and future-proof than our 'other optical equipment'.
Carl Zeiss AG (still their name by the way - ZEISS is the shouty new age brand name):
Number of employees: 31,260 (30 September 2019); 6.43 Billion Euros Operating Profit.
People have said they are moving very heavily into cine lenses. But anyone who knows what's going on with consumer stills/video lenses isn't talking much about it, going on web searches anyway. They were never a huge producer of lenses, orders of magnitude below Canon/Nikon. (glad you like the Sonnar.)