trancejeremy
Adventurer
If they released stuff in .mobi or .epub, they would have to reformat everything. Since they're basically talking about decades of products, most of those products wouldn't exist as electronic files, meaning there'd be a lot of work. I can't see that being a profitable enterprise, really.
OTOH, who knows, perhaps they have been slaving away at reformatting every module for months now...
While that's certainly true, at the same time back in the old days (back when pdfs were somewhat new fangled) they released a handful of modules and other things in text and rich text format as free downloads, and on the old core rules cd-rom, they had things in windows help files and IIRC, rich text.
If they actually have things in text or rich text files, it's relatively easy to make mobi/epub files out of them. Then again, those things could be lost.