Which emerging industry benefited most directly from the prosperity generated by demand by consumer goods in the 1950s?

This emerging industry that benefited from the prosperity of the 1950s was the advertising industry.

Explanation:

As people bought more and more TVs and it became a "must-have" in every house, TV became a prolific way to enter everybody's houses. It started in the 50s the boom of the mass media.

The advertising industry grew as the consumer goods industry grew and how a product was advertised became important to the commercial success of it.