Fund management is a unique service, different from anything else. Even though it looks like you are buying a service from a large corporate, you are actually hiring a specific named person for a specific task. You may be investing your money in say Mid- and Small-Cap Fund of Reliance Mutual Fund, but in reality, you are hiring Sunil Singhania to manage your investments. Of course, there are many corporate services from airliner piloting to courier delivery that are provided by a specific person. However, what is unique about fund management is that the service is provided by a specific named person and that this arrangement is actually required by the laws and rules under which mutual funds operate.