What's the Difference Between Being Pro-business and Being Pro-market?
In a nutshell, pro-business policies help currently existing businesses and their shareholders. Pro-market economies are those that follow the tenets of the free market - competition, no barriers to entry and so on. Pro-business policies may not imply a pro-market environment.

This is discussed at length for the case of India in Rodrick, D. and Subramanian, A., 2004. From “Hindu growth” to productivity surge: the mystery of the Indian growth transition, NBER Working Paper Series, WP 10376.