It's funny how long this thread is and yet how irrelevant it was to sales.
It's almost as if Sony knew what they were doing
And Xbox continues to chase the ghost of ps2 trying the Trojan horse approach with 4k bluray except they forgot it's 16 years later and Netflix is king now
Classic Microsoft
Sony know how many people have used the PS4 to play Blu-rays because you have to connect to the internet to enable Blu-ray playback & I'm sure the numbers told them all they needed to know.
Most 4K media devices are not going to have a disc drive on them so I don't know why people are acting like a game console has to have a UHD Blu-ray drive on it.
Besides UHD Blu-ray is a stop gap format just like PS4 Pro & Xbox One Scorpio are stop gap consoles.