Final answer:
The main reason concert promoters may hide ticket prices in ads is to create exclusivity and anticipation, leveraging the psychology of scarcity and demand inelasticity among dedicated fans. To maximize revenue, bands need to find a balance in ticket pricing, considering demand curves and fan satisfaction.
Step-by-step explanation:
Concert promoters might not display the prices of concerts in ads primarily to create a sense of exclusivity and anticipation. Unlike options A, C, and D, this strategy can leverage the psychology of scarcity and curiosity to drive demand. Specifically, for bands with fanatical followings, the demand for tickets can be highly inelastic. This means that a substantial number of fans may be willing to pay very high prices regardless of the announced cost, filling the arena to capacity. Indeed, some of the most popular bands could set ticket prices so high that the venue doesn't sell out, but this strategy can result in high revenue from those who do purchase at elevated prices. However, bands and promoters may sometimes opt for pricing tickets below the absolute maximum to ensure happier fans, who might then spend more on merchandise like recordings, T-shirts, and other memorabilia.