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IAI Actuarial Core Principles · Business Economics · Impact of advertising on sales and demand

In a market where a few large insurers compete mainly on brand image rather than on price, which feature of oligopoly best explains why heavy advertising is common?

Oligopolists are interdependent and fear price wars because rivals can match price cuts. They therefore prefer non-price competition such as advertising and branding to win customers, which explains why advertising is heavy in oligopolistic markets such as insurance.

  1. AFirms are price takers and must advertise to be noticed
  2. BPrice competition is risky because rivals may match cuts, so firms use non-price competition such as advertisingCorrect
  3. CEntry is free, so advertising is needed to remove supernormal profit
  4. DProducts are perfectly homogeneous, so advertising informs buyers of quality differences
  5. Demand is perfectly elastic, so advertising raises price without losing sales

Explanation

In oligopoly firms are interdependent. A price cut may be matched by rivals, leaving everyone worse off, so firms prefer non-price competition including advertising and branding. The other options describe perfect competition or features that do not hold in oligopoly.

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