Marketing is everything.
What I have heard about the Edsel was that it was an expensive car introduced when the country was in recession and it was plagued with shoddy workmanship (probably because in part Edsel was a new division but had to rely on Ford for manufacture and because Edsel's innovations were complex and men on the assembly line were unfamiliar with them).
I remember hearing that some of the first Edsels deliveried to dealers had notes tied onto the steering wheel identifying the parts that were missing.
That said, it was a beautiful automobile.