The status quo isn't in the minds eye of next generation high tech storytellers, and mirrorless should be a wakeup call for legacy camera makers.
A lot of pros don't embrace change quickly as it is so damn expensive to constantly reinvest. It's never ending! However, as a very high end pro-shooter for 25 years now I am convinced, after experiencing it first hand, that mirrorless is the way forward, and 4K is a step in the right direction not just for video, but for printed stills as well. The next generation chips are only going to be better, and if you make a living with a camera, then it only makes sense to buy the brands that allow you to shoot stills, video, or both at the same time. Also, mirrorless cameras have features that make our lives easier. The camera does't make the photographer, but they definitely change the shape of the industry and how we survive or succeed in it.