Why is it so difficult to find online platforms that teaches other very important languages such as LISP?

Question

these languages include, Haskell, Smalltalk, LISP, Pearl, etc. a language like LISP is very important in A.I.

Answer 1

because languages like these are more obscure. It's not impossible to find them but it certainly is harder.

Answer 2

There is lots of resources on Perl.