It probably won't surprise anyone that the vast majority of ebook sales are for genre fiction and light, nontechnical nonfiction. I work for an academic publish

It probably won't surprise anyone that the vast majority of ebook sales are for genre fiction and light, nontechnical nonfiction. I work for an academic publisher and we do ebooks (I wrote the code spec), but it is suboptimal when you start getting into large tables, charts, math, etc. on smallish tablet screens. Yes, better software support for these things would help. Apple iBooks isn't terrible. But there's not so much incentive for the vendors.