Conservative billionaire Charles Koch told his ultra-rich friends that they face a “life and death” decision whether to keep lobbying for tax breaks and government subsidies. “Business leaders (must) recognize that their behavior is suicide, that it is suicide long term. To survive, long-term, they have to start opposing, rather than promoting, corporate welfare,” Koch told about 450 allies at an Orange County, Calif., summit that began Saturday. With the Pacific Ocean behind him and friendly CEOs sipping wine nearby, one of the biggest political donors in the country said it is time for conservatives to start eschewing tax breaks. “Obviously, this prescription will not be an easy pill for many business people to swallow.