cut one another's throats

cut one another's throats

Of a group or population of people, to be engaged in ferocious, pernicious competition with one another other. It's a symptom of the society we live in that we're all trained to cut one another's throats just to earn a little bit more money. The majority of the economy is dominated by a few megacorporations, while all the smaller businesses are cutting one another's throats for what little market share is left over.
See also: cut, one, throat
References in classic literature ?
Now," quoth Little John, "it doth seem to me that instead of striving to cut one another's throats, it were better for us to be boon companions.
Drawn in lane three, with Merritt in four and James in five, if the two favourites cut one another's throats, Gonzales looks the man who could take advantage down the home straight.