Let me lay the raw truth out for any lisp fans. It will never be popular or widely adopted. Ever.
It has been around for half a century. At no time was it ever widely adopted. It was always just pushed by a small group of fanboys.
That said, I love it and have learned a ton from as have many others.
I mean, what is going to take? 10 more years? 20? At what do you conclude that a language really isn't useful for general purpose programming? (not to say it isn't brilliant and useful for specific purposes, learning, etc.)
I think Lisp is the same: it's everywhere you don't think it is because it's opinionless and languages are defined by their community (and community is held together by the shared values and opinions). Look how many languages are rapidly adopting functional programming idioms. They're becoming Lisp. Eventually you start seeing the value of functional idioms in Blub language. Then you go and look at where it came from and notice, "Hey this is the real thing". Then you get real yourself. (This has been my experience).