to cutone's throat―slit one's weasand
喉を突く - 斎藤和英大辞典
to cutone's own's throat―pull down one's house about one's ears
自滅を図る - 斎藤和英大辞典
to destroy oneself―cut one's own throat―pull down one's house about one's ears
自滅を図る - 斎藤和英大辞典
Upon the construction of the Transcontinental Railroad, two private companies came forward to build the Transcontinental Railroad. As we are talking about the United States here, they engaged in cut-throat price competition. This resulted in the bankruptcy of one of the companies. As train fares increased subsequently due to the adverse effects of monopoly, a riot broke out among farmers in Chicago, in Illinois, one of the Midwestern states where agriculture is a prominent industry. Farmers had to sell their produce in the cities, but the train fares had become higher and higher. This caused a mass riot. As you know, executive power is weaker in the United States than in Japan.
そうしますと、大陸間横断鉄道というのをつくったのです。そうすると、2社、民間企業が大陸間横断鉄道の建設に参入しましたら、アメリカのことですから、すさまじい値下げ競争をする。そうすると、相手の1社はつぶれたのです。そうしたら、今度はじわじわと独占の弊害といいますか、汽車の運賃を上げてまいりまして、今度は中西部のシカゴ、あの一番農業の盛んなところですから、あの辺の農民が暴動を起こしたのです。つくった農作物を都市に出さなきゃならない、その運賃がどんどん上がってきた。それで大変な大きな確か暴動が起きて、アメリカというのは行政権がご存じのように日本よりは弱いのです。 - 金融庁