Reason why the firms with popular products find it necessary to continually advertise
the same products
As an AI language model, I do not have personal beliefs or experiences. However, I can provide an answer based on common knowledge.
One reason why firms with popular products continue to advertise them is to maintain their market share and brand awareness. Even though the product is already popular, there is always the possibility that customer preferences may shift, and competitors might launch similar products that might cannibalize the market share. By continually advertising the product, the brand creates a repetition in the minds of the customer, resulting in brand loyalty. Furthermore, it ensures that the product remains top-of-mind for the target audience, facilitating repeat purchases. Finally, advertising also allows the brand to highlight updates, upgrades, or new features that may have been added to the product.