What about sports shooters?
If your a photojournalist you are not a "sports shooter" who takes video with your DSLR camera.
When they say photojournalist they mean (for example) the guy that is taking photos
of the war in wherever. While they are there and they see an act of XYZ happening, they can quickly switch their camera to video shoot it, then via their 3G phone upload the video to their home office to broadcast to the world.
If it takes this guy 30 mins to send the footage back to home base when in the field and he is shooting 720p. How long do you think it will take on average to send a 4K file?
Sports shooters are a different breed. If they are taking photos they are not wanting to try and shoot video with their super telephoto lenses....and even less so at 4K. Their camera set ups are designed for one purpose and one purpose only. Taking photos.
If you are talking about sports shooters (video) then thats a completely different field.
These guys shoot large format cameras that are cabled to the main van in the carpark that broadcasts the footage to the main station for editing. They are not going to be using DSLRs, maybe Go Pros in places like the goals but not usually for live coverage (Tom Guilmette is the exception to this rule).
But on saying all this there is no point in shooting 4K in this realm until the average home can watch 4K on their TV etc.
Argument being that 4K is really only for cinemas at the moment.
Give it a few years to settle first.
We all remember the hoopla over 3D from last year.