Final answer:
The effect of digital out-of-home advertising on sales depends on how consumer preferences change and can vary widely; however, a general shift to digital sources negatively impacts the demand for traditional news sources.
Step-by-step explanation:
The question at hand involves understanding the impact of digital out-of-home advertising on sales. This is particularly relevant in the context of changes in consumer preferences and the shift from traditional news sources such as print, radio, and television to digital platforms. When consumers change their tastes, it affects the demand for various products.
In the scenario described, the shift towards digital news sources is shown to have a negative impact on the demand for traditional news sources. This is because as more people consume news through digital means, the quantity demanded for traditional news sources declines at any given price, leading to a leftward shift in the demand curve from Do (initial demand) to D1 (new lower demand).
While the specific answer to the provided question about the effect of digital out-of-home ad users on sales is not given and can vary depending on numerous factors, generally, a shift in consumer preferences can be expected to have a significant impact on market demands and thus on sales. However, without specific data or context, it is not possible to determine whether the impact is significant, moderate, minimal, or nonexistent.