There are a few rare exceptions. My late father was one of them. He had degrees in law, engineering, and journalism. Throughout his life, he was consistenly elected to both the chairman/president position of both the astronomical society and the engineering society. He spoke 11 languages. He had an IQ of 185. And much more...
The exceptions are few.
Generally, what would make a human being push selling products that are creating climate change. Essentially, it doesn't matter which way you look at it.
Manufacturing uses up ever dwindling finite sources, often spewing toxins into water, land, or air in the manufacture of them. I don't think there's much that is manufactured that isn't casing harm these days. The manufacture of textiles is toxic to the environment.
So anyone who owns a clothing store, sells fabrics, cars, etc. is aiding and abetting an industry that is driving us further towards climate change.
Then there's advertising. It's a soft of soft brainwashing. The more the human brain hears something, the more it believes it. Advertising affects human behaviour. That is how consumerism is driven. Consumerism is destroying our planet. Who is buying the advertising? Business, of course.
So, yes, either business owners, fo rthe most part don't have the intelligence to make all these connections. Or they realize it, and they carry on anyway. That, in Hannah Arendt's opinion would be called the banality of evil.
My late brother in law considered himself extremely spiritual. he manufactured toxic chemicals. He made a lot of money out of that. He was always berating me because I was such a loser. After he died, my sister told me he was 'a bit concerned' about all these toxic chemicals going into the sea.
So what was he? Intelligent or evil?
I could explain it to you further. Of course, your statement shows that you can't put together the links.
With regard to class. In my day, class had nothing to do with money. It had to do with ethical behaviour, coming from a 'good family,' and I suppose, old money.