I think the whole CONCEPT of a "textbook" needs to change: 1. It should be open-source or available on your nearest "App Store" for a REASONABLE price 2. It should be interactive. If I have a history textbook describing a battle, I want to be able to watch the battle unfold (even if it's just a diagram). If I am reading a chemistry textbook, let me play with the molecule. When I need to learn about the D3 group in Ab…
To make this a reality, I'd consider building a platform that serves as a centralized repository for open information/knowledge and gives the information some structure (Ontology). With that in place, people can build applications on top of the open information (interactive apps/charts, etc)
To encourage qualified people to contribute, edit, and update the repositories, consider layering in a Quora/StackOverflow type voting/reputation system with a Kickstarter crowd funding component to fund qualified folks and allow them to dedicate significant time to the project.