Definitions for "De facto standard"
An e-learning specification that hasn't been officially established by an accrediting agency but that is accepted and used as a standard by a majority of practitioners.
An unofficial standard that exists because it is widely used by companies in the industry.
A commonly used term describing a standard that has emerged due to extensive use of a particular product or solution.
a major advantage to its owner and its owner's friends/allies
a specification that became popular because everyone just happened to use it, possibly because it was implemented in a product that had significant market acceptance