Common Lisp once had plenty of backing from major companies like Symbolics, Xerox, and Texas Instruments, as well as smaller companies such as Harlequin. Even Apple owned Macintosh Common Lisp at one point, and SK8 (which could be considered a follow-up to HyperCard) was implemented in it. Had Apple not had its problems in the 1990s, one potential alternate version of Apple I could imagine would be some sort of Lisp OS with a Mac interface (true story: the Newton could’ve had a Lisp OS if it weren’t for C++ advocates winning out). Unfortunately, the AI winter of the late 1980s and 1990s severely damaged the Lisp market; companies either abandoned Lisp or went under. The torch of Common Lisp has been carried on by open source and commercial implementations, but there are no major companies actively backing Lisp in the way that Java is backed by Sun/Oracle and that Python is core infrastructure at countless companies, large and small.
I didn’t know that conferences could potentially generate a lot of revenue to help fund programming language development. I’m quite intrigued by this idea, actually. Thanks to advocacy of the language, there are probably thousands of Common Lisp developers in the world, many of whom are working on interesting projects. Perhaps a series of profitable Common Lisp conferences will provide the spark needed to come up with a modern Common Lisp foundation that is able to support further development of the language.