Why there’s light in the refrigerator but not in freezers?!

While missing my stocked foodpile that I used to have in my refrigerator at home, an interesting thing struck me. Ever wondered why there's light in refrigerators but not in freezers? (some do, but most freezers don't).

One possible explanation is because people open the refrigerator much more than the freezer, thus people benefit more from having a light in the fridge than the freezer. 

However, I read through a few websites, which explain how "Freezers tend to be more densely packed, so a light isn’t going to be helpful" or how "An incandescent light in the freezer will generate too much heat, making the system extremely inefficient."

But these theories didn't seem to be satisfactory explanations to me. So I turned to Economics! And realized, it all comes down to Cost-Benefit Analysis. 

While placing a light in the freezer adds additional costs but will it provide any additional benefits to the consumer considering the fact that he will be opening the fridge relatively more times than the freezer? From the producer point of view, it’s not highly expensive to add a light in the freezer relative to the cost of the whole unit, but it does cost something and as we know, producers want to save every penny in the cost of manufacturing their product. 

Free Cartoon Images 2018

Thus, in nutshell, the benefit of placing a light in the fridge is much more than in the freezer. So, why bother putting a light in the freezer?