When the government mandates a maximum allowable price for a good or service, such as $25, this intervention prevents the market price from rising above the established limit. For instance, if the equilibrium price of gasoline would naturally be $30 per unit, a mandated cap of $25 prevents it from reaching that level.
This type of market intervention is often implemented with the goal of protecting consumers from perceived excessive prices. Historically, price controls have been used during periods of perceived crisis, such as wars or natural disasters, to ensure affordability of essential goods. However, artificially suppressing prices can lead to unintended consequences, including shortages, rationing, and the development of black markets as supply decreases and demand remains at the artificially lowered price.