Lisp (or rather, the Lisp family - the word has not referred to a specific programming language for decades) does have a monopoly on programming by way of raw syntax tree entry. The latter appears to be required for a proper macro system (though David Moon and others have attempted to change this.)
The fact is, I feel caged when I am programming in a language where I cannot monkey with the syntax at will, and I am not alone in this feeling. When I am barred from creating new syntactic constructs, I feel like a "human compiler" (in fact, exactly that which the job title "programmer" actually meant in practice before the invention of actual compilers.)
I wish to branch out to languages which feel less limiting and more general than the Lisps, not otherwise. And I have yet to encounter any. All of the good ideas of Haskell (laziness, etc.) are easily bolted on top of even a stock Common Lisp. Likewise for the other languages named. Forth, however, remains interesting due to its AK47-like simplicity and embeddability.