Not really, if you're a billionaire.
Without an NDA, a disgruntled ex-employee (or just one hoping to strike it rich) can malign you in subtle ways, invent little incidents that don't rise to the level of "libel," but still damage your "brand."
Regards,
Thanks for the info.
If most celebrities do require these NDA’s how have the tabloids managed to stay in business for so long?