Examples with screenshots: http://lisp-screenshots.org/

Some companies: https://github.com/azzamsa/awesome-lisp-companies/ (Routific, Google's ITA Software, SISCOG running resource planning in transportation, trading, big data analysis, cloud-to-cloud services, open-source tools (pgloader, re-written from Python), games (Kandria, on Steam and GOG, runs on the Switch), music composition software and apps…

More success stories: https://www.lispworks.com/success-stories/

I myself run web-apps and scripts for clients. Didn't ditch Django yet but working on that.