Just watched the video. If the Apple family is worried about what they saw, then I really wonder how they think a professional rapper might celebrate a billion plus dollar deal? I've celebrated the closing of much smaller deals in much more wild fashion than a few boasts and claims of knocking back some Heinekens. But I'm a reasonable and prudent guy who puts in a hard days work and gets results. But at parties, I party. This was a video from a party.
If you want the cred of folks like this, you have to understand the actions and behavior they will bring. In fact, they have to continue to exhibit certain behavior in order to maintain the very cred that you want to be associated with. Would Paris Hilton have become a an international celebrity if she had acted reasonable and prudent every day? Celebrities need to add buzz in order to maintain their currency. This was a modest bit of boasting. Nothing to see here in my opinion.
Probably plenty of reasons not to spend $3.2 billion on Beats. But Dr. Dre boasting about a legitimate and impressive milestone and using some swear words is not a good reason to not do a deal.
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But do you cancel just on principal? If the counterparty is leaking in order to get a competing offer, that might be unfair. So you cancel. Or if they are leaking and thereby giving advance notice to your competitors, that might be a problem. But I don't think you cancel a deal just based on principal. Not if there are billions of dollars at stake. And Apple wouldn't do a deal of this size if they didn't think they would make at least a billion in profit in the next few years. Anything less than that would make the deal not worth the money combined with headache.