Photographers under the commercial photography niche would be the people taking up these jobs. It's no doubt that this job is just as essential because consumers judge a lot based on what they see, regardless of an equipment's specs.
It is pertinent to note that it is not all products that buyers would go for based on what they saw on picture. For example, those getting a laptop would want to critically analyse the specs of the laptop before making a purchase simply because they wouldn't want to get an item that doesn't handle their needs.