For movies, last time I checked about a year ago, it was still difficult to get a bluray that was real 1080 (they usually are DVDs converted to bluray and the q

For movies, last time I checked about a year ago, it was still difficult to get a bluray that was real 1080 (they usually are DVDs converted to bluray and the quality is not any better) ... I wonder how many years it will take for 4k content to be widespread ...