In a certain way the analogy is true, lately, when applied to photography. Used to be that the "big irons" from Nikon and Canon were universally acknowledged to be the pro solution and showing up with something different might get you a sidelong look that signified trouble.
I worked all last week with the Nikons and boy are those files lovely. And nobody questioned my choice of cameras. But even the most addicted Nikon (or Canon) power user would have to admit, after working with a good, EVF endowed camera for a few weeks, that their choice of tools is growing kludgy and long in the tooth. It's not a question of lenses and sensors but