Investor Protection and the Substitution Effect of Corporate Governance and Product Market Competition on Firm Value

International research has firmly established that a substitute relationship exists between corporate governance and product market competition on firm value. In this study, I reexamine this substitution effect in an international setting, allowing the relation to vary with investor protection. As hypothesized, I find that investors place a higher value on the substitution effect of corporate governance and product market competition in countries where the legal and regulatory mechanisms to protect investors are weak. This finding suggests that country-level investor protection has a moderating role in affecting the substitution between product market competition and corporate governance on firm value. These results, which are robust to several sensitivity tests and alternative specifications, are consistent with an equity agency cost benefit, resulting from product market competition and corporate governance, which is valued more by investors where investor protection is weak.