There are two things that marketers are typically loath to do: own up to their mistakes and talk trash about the American public.
https://www.adweek.com/agencies/aws-1-3rd-pound-burger-failed-so-its-trying-a-3-9th-pound-burger-instead/
A&W’s 1/3rd Pound Burger Failed, So It’s Trying a 3/9th Pound Burger Instead