I often find it's also correlated with the number of people affected. If you start making decisions for the entire organization (as though that ever works) ever

I often find it's also correlated with the number of people affected. If you start making decisions for the entire organization (as though that ever works) everybody has to be involved, because anybody no involved will see this new policy wielded as a weapon by the people who were involved. I believe making decisions fast is much less about cutting down the number of deciders, and way more about cutting down the impact. Essentially, make local decisions.