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With respect, there is nothing obvious or trivial about your assertion. There is no shortage of examples of economic agents that provide no economic value whatever (or represent negative value-added, in fact).
With respect, can you give me 3 examples of agents that provide no (or negative) economic value?
Kissinger Associates, Tony Blair Associates, Prime Policy Group, etc
They provide value in two ways: 1. Everyone knows Kissing & Blair and they can make introductions to gov'ts to which you can sell stuff 2. I wouldn't be surprised if they engaged in corrupt activities i.e. you're in shit with some foreign gov't, Kissinger knows a guy.
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