They can pay for better QoS, which will result in better QoS for their customers if they want.
Or their customers can, or both.
"Can you imagine an electric company trying to get some sort of fee from Samsung because they sell a lot of electronics that people use in their houses..."
That analogy doesn't work because Samsung, in that case, has nothing to do with the data flow. Netflix obviously does.
Netflix should not have to pay special fees because they are 'Netflix' or 'it's video' or 'it's movies' - but they should definitely have to pay fees relevant to QoS of their upload bandwidth. Just like you, I and everyone else.