Discuss why there is a demand for auditing services in a free-market economy. What evidence suggests that auditing would be demanded even if it were not required by government regulation?

There is a demand for auditing in a free-market economy because the agency relationship between an absentee owner and a manager produces a natural conflict of interest due to the information asymmetry that exists between the owner and manager. As a result, the agent agrees to be monitored as part of his/her employment contract. Auditing appears to be a cost-effective form of monitoring.
The empirical evidence suggests auditing was demanded prior to government regulation. In 1926, before it was required by law, independent auditors audited 82 percent of the companies on the New York Stock Exchange. Additionally, many private companies and municipalities not subject to government regulations, such as the Securities Act of 1933 and Securities Exchange Act of 1934, also purchase various forms of auditing and assurance services.