Of course you don't need a lisp to build CRUD apps. Companies don't want to depend on highly trained engineers either. I don't care for being cheap though. I'd rather know 10% of lisp than 100% of yet another dead-end language.
Ahem.
You'd be somewhat more persuasive if you dropped the arrogance and stopped assuming that those who disagree with you are self-deceived fools.
I was a fool until I understood LISP. The arrogance is warranted. One is a fool at least until getting LISP, this is not an assumption but a statement of fact.
(I actually got mad once I got LISP because I understood the awful waste that exists in the form of non-LISP languages.)
Again: Non-lispers are cheaper that lispers, thus it is not in the industries interest to have enlightened engineers, because for 90% of the business you don't require the enlighentment.
If you want to persuade people, give them a reason to believe what you say. "Believe me because I'm smart and you're stupid" is not a persuasive argument.
If you don't want to persuade people, if you just want to wallow in your superiority in your self-imposed ghetto, that's your business. But if so, would you mind not wasting our time with your statements of superiority?
And: Non-lispers are cheaper than lispers? Perhaps the average lisper is better paid than the average non-lisper. Did you control for years of experience and such? And if for 90% of the business you don't need people who know lisp, then maybe lisp isn't the best tool for the job except in 10% of the cases. Maybe you should stop thinking it's best for everybody?
Not cheaper in terms of salary. Cheaper in time needed to train. You can use e.g. Python or Ruby without knowing how its implemented (if you knew you wouldn't use it). A Lisp programmer automatically needs to be a full stack developer, or at least conscious about the stack, because he is operating a compiler framework. It has lots to do with circular definition and choosing the right tools bottom up. For instance, most of CL can be and is implemented using a core part of the language. What that core is can differ from implementation to implementation. So the barrier between user and creator is very small in Lisp, thats what makes it so powerful and demands its users to be well trained in many aspects of software systems.
I think the more knowledge you have of your environment, the better you can solve a problem in it. So I think most programming problems can be better solved in a lisp than in any other language (so far).