And if the answer is “nobody will hire a Lisp programmer” then surely all the Lisp lovers of the world could create a company and crush the competition with awesome software? If Lisp really is as powerful as they claim?

A lot of Lisp lovers have found comfortable and profitable niches to practice their trade and aren't interested in forming companies or consultancies to crush the competition. Some Lisp lovers survived the AI winter of the 80s and have flashbacks of scrambling to port their tools over to Java. Some Lisp lovers are academics and education, not commerce, is where they find meaning.

Your question motivates and challenges me. Some of the emerging and successful no-code platforms could have been written using Lisp. Maybe that is one possibility...

Now thats the kind of thinking the Lisp community needs more of to be more successful. Find real world projects where Lips has an advantage and show the advantage by actually doing it. Or promote stories showing how Lisp has been used for cool projects in the past. I know some satellites were running on Lisp. Making it possible to remote REPL the satellite to fix issues. Now that is cool and shows one of the unique features of Lips that developers actually care about.