[qop]

It's not making much money because it's not that conducive to writing real lisp code with. Nobody thinks about sexprs the way parinfer does unless that's their first encounter with them. If you went and taught parinfer users how to use paredit, they'd wonder why paredit is so much easier and feels more w useful to them.

Additionally, it's a niche market in the first place. People aren't exactly clambering for more lisp dev tools except in recessed corners of the academic universe and places where clojure is used. Aside from those users, there's little demand for a tool like this, and that market is like I said, further eroded by significantly higher quality tooling that's already available.

Not every piece of code someone writes is worthy of being paid for. Not every piece of code written deserves to have been written in the first place, unfortunately.