All well and good but at the higher end they're writing applications in JavaScript and electron and using many times more system resources than C or rust, and it will always be cheaper for them to develop in higher level languages (especially when the performance problem can be offloaded on the user's machine instead of their own servers)
It's cheaper for companies to have their developers spend less time developing in higher level languages and just throw more hardware at the problem than spend more money developing in a more difficult language
They aren't concerned with energy or material efficiency, only financial
Only their own specifically. Our economy wants people to only care about themselves. Even though this doesnt make sense as polluting the earth will directly impact you.