Greed, for lack of a better word, is perhaps not as good as it used to be. It's ugly and treacherous, and unabashedly so, in "Capital," a financial thriller set in the highest echelons of France's wealthy and powerful. Veteran director Costa-Gavras, who made his name decades ago with films that sharply addressed political issues—most notably, "Z" and "Missing"—focuses his attention this time on the kind of unscrupulous, unchecked money grab that caused the 2008 economic collapse. Like "Arbitrage" and "Margin Call," which depicted that cataclysmic moment in our recent history, "Capital" f...