You would think so really, but going back to film photography,
there are reasons why portraits were always shot on eg, Konica,
landscapes on Agfa or Fuji, and no one used Kodak at all
professionally -- except for Kodachrome.

No one? Kodak sold -- and still sells -- professional color-negative film
that's often used for wedding photography. In fact, GYF recently introduced
an ultra-fine-grain professional color-negative film. If there weren't a
market for it...

I should tell you that, when I use color-negative film, it's Fuji. Part of
the reason is price, the other is that Costco uses Fuji paper. Fuji on Fuji
produces better results than Kodak on Fuji. (The opposite is also true.)