I'm not suggesting that there's no room for developing and maintaining relationships.
But when you're the CEO of a company with employees and/or investors, you need to prioritize and filter, and you need to recognize the important, worthwhile conversations from the unimportant, unproductive ones.
Spending an hour of your time arguing with a person who doesn't want your advice in the first place and won't even tell you what he's working on without an NDA clearly falls into the latter category.
But when you're the CEO of a company with employees and/or investors, you need to prioritize and filter, and you need to recognize the important, worthwhile conversations from the unimportant, unproductive ones.
Spending an hour of your time arguing with a person who doesn't want your advice in the first place and won't even tell you what he's working on without an NDA clearly falls into the latter category.