When I buy a refrigerator, if a model has insane power consumption that makes me think about my electric bill, I’d be less inclined to buy it. The refrigerator manufacturer is going to sell less. So in a way, you can say that they’re definitely paying for those wasted resources.

For software companies it’s the same, in a way. They pay whatever the consumers deem appropriate. It’s just that consumers don’t really care for the most part, so the cost is basically $0. RAM is cheap, and if a company prioritizes shipping features over optimizing RAM, that’s almost always going to be the deciding factor.