As for as 'just do "x"'. The justice department has refused to prosecute multiple times when crimes were committed. And they've faced numerous criminal charges despite buying off politicians.rhetoric designed to appeal to the American spirit of individualism and fear of communism.
Who would be there to investigate when private business is or isn't breaking the law, without government? What authority could do that?
Koch Industries — in addition to being involved in improper payments to win business in Africa, India and the Middle East — has sold millions of dollars of petrochemical equipment to Iran, a country the United States identifies as a sponsor of global terrorism.
Internal company documents show that the company made those sales through foreign subsidiaries, thwarting a U.S. trade ban. Koch Industries units have also rigged prices with competitors, lied to regulators and repeatedly run afoul of environmental regulations, resulting in five criminal convictions since 1999 in the United States and Canada.
From 1999 through 2003, Koch Industries was assessed more than $400 million in fines, penalties and judgments. In December 1999, a civil jury found that Koch Industries had taken oil it didn’t pay for from federal land by mis-measuring the amount of crude it was extracting. Koch paid a $25 million settlement to the United States.
Phil Dubose, a Koch employee who testified against the company, said he and his colleagues were shown by their managers how to steal and cheat — using techniques they called the “Koch Method.”In March 1999, Koch Petroleum Group, a Koch Industries subsidiary, pled guilty to charges that it had negligently dumped hundreds of thousands of gallons of aviation fuel into wetlands near the Mississippi River from its refinery in Rosemount, Minnesota, and that it had also illegally dumped a million gallons of high-ammonia wastewater onto the ground and into the Mississippi River. Koch Petroleum paid the Dakota County Park System a $6 million fine and $2 million in remediation costs, and was ordered to serve three years of probation.They're not the only ones, just more visible than most.In 1999, a federal jury found that Koch Industries had stolen oil from government and American Indian lands, had lied about its purchases more than 24,000 times, and was fined $553,504.
In January 2000, a Koch Industries subsidiary, Koch Pipeline, agreed to a $35 million settlement with the U.S. Justice Department and the State of Texas. This settlement, including a $30 million civil fine, was incurred for the firm's three hundred oil spills in Texas and five other states going back to 1990.
In 2001, the company reached two settlements with the government. In April, the company reached a $20 million settlement in exchange for admitting to covering up environmental violations at its refinery in Corpus Christi, Texas. That May, Koch Industries paid $25 million to the federal government to settle a federal lawsuit that found the company had improperly taken more oil than it had paid for from federal and Indian land.
In June 2003, the US Commerce Department fined Koch Industries subsidiary Flint Hill Resources a $200,000 civil penalty.
edit:: Also if you think corruption is bad now, it would be worse at the local level.