Apple hypes their platform specific tools, but there's no reason that at least traditional textbook content can't be provided in an easily cross platform way. E

Apple hypes their platform specific tools, but there's no reason that at least traditional textbook content can't be provided in an easily cross platform way. Even the more complex content will likely become standardized to some extent in the near future (presenting it in web views is probably viable for a lot of it, especially once there's better support for <audio> tags).