> People aren't learning excel because Universities are part of some Microsoft conspiracy. They are learning it themselves, or from each other.

At least in germany children are often forced to learn excel in school because the official curriculum includes "office software" which is an euphemism for "microsoft product training". This has certainly not developed from necessity. Even someone who thinks school should only be a preperation for the job market would agree that employees who are able to help themselves are better than ones who know how to use a specific version of Excel.