It's always amazing to me that good business people are so much more real in interviews than almost any other category of "celebrity". (The regrets question here or, say, Steve Jobs "hearts outside your bodies" comment.)
Lower stakes, perhaps? I suspect that far fewer people are paying attention to what business people (even Steve Jobs) say than what Tom Cruise or Lebron James says. If James, for example, says anything interesting you can be guaranteed hundreds of columns and on-air rants from national and local media praising and criticizing him. It probably makes him wary of actually saying anything beyond PR-approved soundbites.