I have no 4K TV, my internet service is not capable of streaming in 4K, and even if these weren't the case, 95% of all of the media content on iTunes is not in 4K.Yes shiny remote that can't beam you 4K content. Maybe Apple will make a 4K Apple TV in 2017 and you'll buy that one too.
But guess what, my 2013 XBox One is 4K ready...
Also, your Xbox One is definitely not 4K ready.