While not 100% Covering pony, it's still pretty relevant to the fandom as a whole. We've sort of hit a golden age in cartoons, with creators and companies picking up on the fact that people of all ages watch them, and making a quality "kids show" might just appeal to their parents and fellow adults as well.
Saberspark did a pretty interesting video on the cartoon world as a whole. Head on down below to check it out!