This is true, the painful truth is that so many so called leaders don't actually have the skill set to run a business successfully. My current org is moving to Agile as the Borard told the CEO to make changes and (s)/he was seduced by consultants on how agile was the answer. On roll out to the actual business the feedback was "WTAF?" and no one involved in the day to day could see it working. Ironically the push for this to happen was that the Exec were too slow in making decisions and thse at coalface needed empowering. End result was spaffing away a fortune on consultancy fees for an org that will be bastardised beyond the model to force it to just about work.
It's kinda rare nowadays for "leaders" not to rely on consultancts as they can shift blame if and when it goes wrong. The MBA can be a very useful tool BUT good business judgement doesn't always come with the qualification.