Even if you assume only the more intelligent 2/3 of adults could
read for pleasure (which may be less
than the real figure), and I would
appeal to 1:10 000 — that's still near 16000 readers in the US alone, which if I cleared $ 1 a
book (my average through tradition publishing HC, Paperback and webscription) and wrote two
books a year — would be a living of sorts.