EMI has been dead since 2012. It was having financial issues before PB and PB's lack of success hurt it even more. Damon and Jamie were on a bad badget from the beginning. It didn't help that Jamie spent alot on yhe Stylo vid itself. EMI was split in two with UMG (Universal) getting stuff and Gorillaz ending up with Warner Music because Warner acquired Parlophone (Gorillaz' label).
http://www.gorillaz-unofficial.com/phpbb3/viewtopic.php?f=20&t=28220&p=307925&hilit=Warner#p307925
Here's some reading on that subject.
As for Gorillaz' story the characters' writer Cass Browne, has stopped so I'm not sure who is writing material for the band's speaking lines. I have a feeling they might be holding off on any major story and are simply going back to that S/T and DD feel of videos just being a showcase for the visuals and the song itself. Not a bad thing tbh since PB ended up being unfinished and all that. Still looks like they're in Detroit though at the end of that vid since their car has a Mich license plate. Who knows if there's a narrative to be seen again.