Yeah, because they're editorial and newsworthy clips, it's not about the quality in this case at all. Highly unlikely someone is going to have a cinema-grade camera in hand whilst an elephant is running rampage or a mob is beating people up over trainers.. These clips are purchased by news outlets to tell the story and if this is all that's available to back up the story then they'll buy it.
If you're ever in an unusual situation, whip your phone out and film it and get it on the stock sites as editorial ASAP and you too might bag a few hundred dollars for your quick thinking.