I've come across so many cases where information wasn't properly shared within a company (much because information was only disseminated on a need-to-know basis or some vague fear of leaking information), and that hurt the company in some way or another. Usually useless work done that needed rework, employee frustration, decisions not being made because of missing information.

I could well imagine that avoiding this one pitfall raises productivity enough to make up for any potential advantage that competitors have.