I'm afraid that most people would just read the title and start completing the title with whatever ideas they have about why Lisp is not mainstream.

I read the whole article and its a lot of words to simply say: There are a lot of factors at play. It could be a mix of those factors.

Beyond that the article does not seem to give any specific insights. It provides many loose analogies to show how something good might not be not mainstream in other walks of life. But it does not go on to elaborate what it is specifically about Lisp.

So I guess I am trying to say I don't know what to do with this article. The talking points are all common sense. And there's nothing specific about Lisp I can learn from this article.