"Nine-tenths of tactic were certain enough to be teachable in schools; but the irrational tenth was like the kingfisher flashing across the pool, and in it lay the test of generals."
T.E.Lawrence, Seven Pillars of Wisdom
A quote from that Lawrence, from his book that became the basis of the film Lawrence of Arabia. This is as true now in a business context as it was then and now in military campaigns.
You can't teach that vision element of strategy; an MBA can give knowledge that helps prevent mistakes, to understand laws and financial accounts, and provide tools to help you analyse how the organisation or a team or a product line are performing, and how that performance might be improved; so much can be taught in an MBA. Maybe a good MBA can help you to execute
But what can be taught is Lawrence's nine-tenths; but you need the vision, the deep inner understanding of your company's strengths and weaknesses, of what your product will become, of your market, the future. You need the irrational tenth