Who usually requires less educational background for trainers than educational institutions require for instructors?

According to the book Discovering Computers 2010: Living in a Digital World, Complete by Gary Shelly and Misty Vermaat, the ones who are in need of less educational background for trainers than educational institutions require for instructors are the corporations. This is because most jobs in corporations are fixed and are part of a regular procedure which are less stringent. Meanwhile for instructors, they deal with different people and different students who may have no experience of the subject. Thus, there is a need to adjust. These adjustments are contextualized which need relevance to the subject at hand. This task itself is a strenuous one and would need a proper training and background.