I would have to agree with Paul, I truly believe that maybe 1% of us will be the lucky ones to meet our ultimate goal the first time around.
There is no business school, degree, college etc etc that can prepare you for the unknown and while you learn tools to pivot quickly, in the end you have to fail at least once.
There are lessons to be learned in facing something you have more heart, soul, passion and commitment too and see it slowly dwindle away.
While maybe in everyones world failure is not an option, welcoming it also prepares you for the downturns and constant need to pivot quickly and re-align your goals.
I personally love reading these articles, its sad for the founders and their employees, but great lesson to be learned.