Meh, who cares?
4K is not fully rolled out, and I'm sure the next rev of the Apple TV will include it. So this year I'll learn how to enjoy the millions of apps on the new AppleTV4 and when the 4K version comes out I'll enjoy it more.
Roku, that's a laugh. It might beat Apple at pure specs, but AppleTV4 will blow all the other smartTVboxes out of the water in content choices with thousands of app beyond all others. Not to mention all the consumer products that will tie into the AppleTV ecosystem for the whole home.
I think your vision is the one that's nearsighted, not Tim Cook's.
You seem to be as opinionated as I am. However, we do disagree.
ATV is great if you are into the iTunes store and that is all. Roku is great if you are into an elegant streaming device that now can do more than the latest ATV to be released.
Apps - I'll go for quality over quantity. I find little difference between the App store offering and say Google's counterpart. I doubt I want to sort through 10,000 apps to get 4 installed. Just make sure the right 4 are offered (quality).
What I see -
ATV if you want iTunes store, 1080p max, and minimal ability (unless Plex could be installed) access to other types of media files. Perhaps moderate gaming capability (we shall see).
Roku - if you just need an elegant streaming box that can also do local medai a la PLEX or XBMC, handle 4k, but no real gaming, this is an excellent solution for the price.
Amazon Fire TV - similar to ATV in that it pushes its own "market" (Amazon Prime) for movies, has Google apps, plays 4k though not the leader of the pack, and is for those that refuse to be bothered with iTunes.
Nvidia Shield TV - perhaps the most interesting new kid on the block. This is a Google orient box that plays the usual fair of Netflix streaming and other services (no Amazon Prime as of yet), excellent gaming box, plays local content superbly (including real HD audio streams such as DTS-MASTER unlike the others). Excellent for standard play and true 4k/60.
Specs - From highest to lowest
NVidia Shield TV
Roku 4
Amazon Fire TV
ATV (the latest release not ATV3)
In my book, most people would gravitate towards the ATV and Roku based on simplicity or an Amazon Prime fan would pick the Amazon Fire TV. This leaves the NVidia Shield out in the cold even though it is by spec the best of breed at this time.