Referring to the below mentioned URL , Jim Collin’s BHAG as mentioned in his book “Built to Last” has been cited here for the purpose of illustrating its similarity with a “Moonshot”.
“A BHAG (pronounced “Bee Hag,” short for “Big Hairy Audacious Goal”) is a powerful way to stimulate progress. A BHAG is clear and compelling, needing little explanation; people get it right away. Think of the NASA moon mission of the 1960s. The best BHAGs require both building for the long term AND exuding a relentless sense of urgency: What do we need to do today, with monomaniacal focus, and tomorrow, and the next day, to defy the probabilities and ultimately achieve our BHAG?”
Though a moonshot and BHAG both apparently do not look like finite goals yet they are possible to achieve which does not make them a suitable fit in an infinite game where the vision should be one which is impossible to attain , yet entice followers to be part of the same for leaving behind a legacy.
Thus this makes both BHAG and “Monnshot” different from a “Just Cause”.This point has been mentioned by Simon Sinek in his book titled “The Infinite Game”.