The consumer / production hybrid industries

Here I outline one of the trends in media that evolved to fill the new ecosystem of user created content, what for now I will call consumer production [i dunno, that sounds backwards][..."prosumer"?].  Back in the day, I expected YouTube videos to be full of home movies, or at least original creations by the users. I never expected so much to resemble talk-shows (but run by younger people). 
Things like: 
* reviews
** movie reviews, game reviews, etc.. People talking about media that other people made
** unboxing videos, reaction videos, and reviews (and analysis) of non-media products
** debunking videos
Then there's the rise of video game streaming.
Some go further:
* Captain disillusion combining debunking with actual recreations of special effects. And also combining documentaries of movies with recreations of special effects. And entertaining writing
* Even video game streaming can be quite involved. Streamers can get pretty fancy with the display that they put around the video game footage and video footage of themselves
** Vtubers
* Some crosses right into investigative journalism, like Sarah Z
* Do fan-made projects, like fanfiction and fan art count?  They at least seem related.  Some of these projects can be quite involved as well [link to page of fan creations].
and then there's shaun, making "cinimasins is wrong about everything" videos