It surprises me how little Australian children's nonfiction is published. Nonfiction seems to me to be something culturally important. On those grounds adult nonfiction is supported, but I don't sense anything like the same level of support for children's nonfiction.
Is it that we can't sell our non-fiction overseas? We're not doing much children's nonfiction on Australian topics. Much less it seems to me than New Zealand or Canadians do about themselves. We do even less non-fiction on topics of interest to other parts of the world. Do we lack the confidence in our factual knowledge? Is it a part of our cultural cringe?
I know that publishers argue that nonfiction is more expensive to design and print, so you're having to invest more and, even successful, children's nonfiction peaks in sales and then drops away while successful fiction has the support for a longer life span.