The boy is the only child of the widower and does not seem to be interested in the same line of business and even when he does, he requires more maturity to be able to manage the business such as graduating from the college, etc.
Does those child not have other close relatives such as uncles or aunts? Usually those who are born as sole heirs have uncles or aunts who always stick to their parents' business and that often happens, I'm confused about what advice to give to that child, if he has good close relatives then he can continue the business he inherited his father but if he has evil relatives, he would be better off selling the business and going to college.
Handling over such business venture to uncles or aunties will be the biggest mistake the boy could ever make in his life. Some of these close relatives can not trust with things like this sometimes because they will end up claiming the business as theirs even when the boy is ready to over the charge of the business. In my opinion, continue running the business is the right step to start from. He doesn't need to be interested in the business before he can pilot the affairs of his late father's business.
The business is not just a new business from the scratch, it's already established and the father would definitely have colleagues doing the same business or probably a trusted worker among the workers in the industry. Abandoning well established business is not ideal for whatsoever reasons, these people can play important role if they want to help the poor boy. By the way, why did they handover such huge amounts of money to a boy of such age leaving him in confusion?