There used to be a time when many of the most desirable tools for teaching and learning were purchased. And, companies used to tout that once institutions have bought the license, teachers can easily create content. It was usually far from the truth. How many teachers can use Authorware, for example, to produce good lessons?
Today, one can easily find a tool or platform that can be easily adopted for free or by paying minimal fees (should one want an ad-free environment) and teachers can create, not just content, but a learning environment that will engage both learners and teachers alike.
If you're looking for a useful tool, visit Jane Hart's learning tools compendium at http://c4lpt.co.uk/Directory/Tools/instructional.html