Nobody knows how to use audio gear. It requires skill. So instead they record using the shitty mic on the front of the camera and then they go back, listen to it, watch their lips and record themselves lip-synching to themselves. It's legitimately fucking amazing.
You know the way to improve Youtube? Give advertisers a demographic breakdown of who watches what videos, how long they watch it for and what Google knows about their purchasing habits and then let advertisers bid on ads that run alongside.
The same way advertising with video content has been run since the dawn of fucking cathode ray tubes.
You know why advertisers are bailing like a mutherfucker on Youtube? Because Youtube refuses to do this because then everyone would discover that the Emperor truly has no clothes.
Youtube gets a billion views a month and isn't profitable. Let that sink in for a minute.