Final answer:
The company that Allan Pinkerton’s sons took over was considered a risk in Ohio due to the concern that a wealthy person could control a military-size force with over 30,000 Pinkerton agents. The son's lack of intelligence and backing compared to Allan Pinkerton was also seen as a potential risk.
Step-by-step explanation:
The company that Allan Pinkerton’s sons took over was considered a risk in Ohio because with over 30,000 Pinkerton agents, a wealthy person could actually control a military-size force. This raised concerns about the potential for abuse of power and the potential for an armed conflict if the company's resources were misused. Additionally, the son did not have the intelligence and backing as did Allan Pinkerton, which may have been seen as a potential risk in terms of leadership and decision-making.