How much Kno sold for and why it failed
gigaom.com
gigaom.com
If anyone is interested, I wrote this blog post 2+ years ago that expands upon this hypothesis, based on my experience founding and exiting from an online education company: http://avichal.com/2011/10/07/why-education-startups-do-not-...
Textbooks as we know them are a bad business model in today's education system. Useful, but wasteful. Teachers assign an expensive book. Then students are only required to read 40% of it. Right there, you can see a serious disconnect and waste of resources.