本命と対抗馬が競り合ったお陰で、ダークホースの彼が漁夫の利を得たってわけだ。

tbd

Since the favorite and his rival were running against each other a dark horse like him was able to pull out in front.

他の物が漁夫の利を占める。

tbd

Someone else profits from the situation.

君は漁夫の利を占めようとしているのか。

tbd

Are you trying to fish in troubled waters?

漁夫の利を占めるつもりはない。

tbd

I have no intention of fishing in troubled waters.

漁夫の利。

tbd

Two dogs fight for a bone, and the third runs away with it.

漁夫の利を占める。

tbd

A third party makes off with the profits.

苛酷な価格競争の中で、Ａ社は我々をけしかけてＢ社と戦わせて漁夫の利を得ようとしている。

tbd

Company A is trying to play us off against Company B in a severe price-war.