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Sony owns Columbia producing 4k Cinema & 2k Television, they also make TVs.
At least 4k resolution necessary for cinema because 3D requires at least 2k x 2k
Their 4k TV is only fallout from their cinema work - Hollywood needing a superior
differentiated product (including 3D) to compete against other media (like early 1950s).
But Movie Theater business-model collapsing
Broadcast Television business-model collapsing
Television receiver manufacturing collapsing (running in the red for Sony),
as display technology soon commoditized with emerging fine-pitch LED
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