It's a trend that is still rising very rapidly. If you want to follow TV- and movie trends from their leading edge, you should look what is popular in torrent

It's a trend that is still rising very rapidly. If you want to follow TV- and movie trends from their leading edge, you should look what is popular in torrent and free streaming sites (subtitles, including fan subbed, are indication of international interest). Trends are visible there before Netflix and others catch up. The surge of Korean movies and TV- started few years ago.