Listed here are 21 cogent reasons why textbooks are inferior to online learning. The perspective, which comes from Argentina, lists all the usual suspects like how quickly textbooks go out-of-date and information that is limited and restricted within a book. There are a couple of new ones to me on the list. For one thing, tree-huggers should think about the paper consumption of the massive textbook industry. For another, reason #2 from this South American point of view is:
The smaller a country, the less likely the textbooks used in its classrooms were written in that country. On the Internet, local authors can publish material on all subjects in a manner appropriate for their own country.
I suppose even if the two textbooks said exactly the same thing about the history of Argentina, as an Argentine school teacher I would pick the one published in Buenos Aries, not Illinois or California. Even better would be to go online and look at articles on the subject from several sources.