unfortunately, it seems feelings are a bit raw in this thread (a lot of people seem to have had a lot of bad experiences, and don't feel appreciated, which definitely sucks).
But i'd guess i'd say as a member of the likely scumbag group, i feel like you aren't really trying to see the multiple perspectives here.
As someone else said, we all create value.
It's rare successful companies can afford to keep people around who don't.
It's much more likely "they don't create value in ways that you value", or value that you see.
I think one of the things definitely holding you back here is the inability to see it from these other perspectives.
You are telling yourself you understand people's motivations and goals (you think they are ambitious and trying to sell themselves to get ahead), but i don't think you really understand the perspective, just your story of it. And you definitely, even in these few sentences, have a clear bias and story about a ton of people.
" i wish it layed out a path of how to build an industry that doesn't attract all those ambitious selfish (executives) people"
I think you need to question your assumptions a lot here. You are assuming that such an industry could exist, or that it would be successful.
You are assuming (as mentioned above) that your group is the only one that creates value.
If that was really true, do you really believe the other groups would still exist?
Why wouldn't someone, in each industry, already have made a successful company that doesn't have those roles, and because they produce much more value, taken over?
I could believe you don't value what they do, but like the author, i don't believe that deserves the judgement you seem to.
Assuming your definition of value is the right one, or better than others, is not a good place to start a real discussion from.
I think you would do well to rely less on personality stereotyping and more on understanding if you want to get to the place you desire (where the ambitious, selfish people you see, aren't causing you the annoyance they apparently do)