What camera does a professional photographer use?

In professional commercial photography institutions (not wedding photo studios), except Hasselblad, Canon SLR is used more and Nikon is used less, not because Nikon is not good enough, but because of its market share and consumption habits. Nikon was the king in the film age, and most photographers used Nikon, but in the early days of the digital age, it was overtaken by Canon, so many photographers were forced to switch to Canon. Although Nikon has steadily caught up with or even surpassed Canon in some aspects, photographers have been using Canon because of their lens groups and usage habits.