All of this bloated 'shitware' today is the result of it having been written by people who a) have no deeper understanding of what the computer is actually doing; also known as typical Python/Java/etc/etc/etc programmers, and/or b) simply not giving a damn about conservation of resources--as further evidenced by all of the other extremely wasteful and destructive habits they hold in their personal lives, and in their societies in general.
After all, this is the same civilization that's burning through increasingly vast quantities of oil at an astounding rate, despite the fact that previously existing abundant and cheap oil is nearly depleted, with no possibility of replenishment or replacement. So is it any surprise that foolish developers also burn through CPU and memory with reckless abandon?
Really, the problems we face aren't just in software; they're more about the foundations of our entire Western 'civilization.' Such problems generally tend to be rather intractable, in the historical view.
I'm working to construct, in my own computing life, something of a 'personal oasis', which is increasingly removed and estranged from all of the horrible things I see Other People out there having to suffer in their personal computing lives, thanks to talentless 'developers' who Just Don't Fucking Care. Some of these pricks actually have the audacity to call themselves 'engineers', even.