Leadership Development Is a $366B Industry: Most Programs Don't Work
forbes.com
forbes.com
Leadership programs train people to follow their program, thus training followers.
Personally I always look at stuff like this with a deeply skeptical eye. I suspect a lot of them are run by friends and family members of the corporate leadership that is deciding to purchase them. Either that or a group in the company has a budget for training that is "Spend or lose it."