Answer:
Oligopoly
Step-by-step explanation:
An oligopoly is a market structure which is caracterized by having few competitors and each one has market power to change the equilibrium price or quantity. According to this, Henry´s competitor had the market power to reduce the price of his products. Also, it might be some barries to entry (to the market) and that is why the problem states that Henry had to do a huge investment (not everyone can do it).