The average user should not have to learn about compressors to have a proper audio mix on a regular tv. It is way more reasonable to have the default mix be for the average home system, and require the enthusiast to select a different audio mix more suited to their system (which is asking a lot less of them than learning about compression). The main reason this doesn’t happen is because movie and television producers can’t be arsed to pay for multiple mixes.
We'll surely avoid scurvy if we all eat an orange…