There is not a legitimate technical reason why I can't watch House of Cards in 4K on my Seiki through my PC. I watched the trailer in 4K over a dozen times on YouTube.
Gamers want to play games on low input lag 4K screens from brands like Asus, Dell, Acer. 4K is much more easily justifiable when users can buy a single screen for their games and ultra-hd content.
Gaming PC's are about the only units with enough compute for highly compressed h.265 playback without built in hardware acceleration, so I don't understand why the market has not made this content accessible for me to purchase.