The most common one is that leadership wants to make a change but some people won't like it so it's easier to have a consulting firm work out the details, make

The most common one is that leadership wants to make a change but some people won't like it so it's easier to have a consulting firm work out the details, make the recommendation and then leave. Even when the outcome is predetermined, the details still matter, and McKinsey adds credibility. Also, you can obtain more information about what your competitors are doing in that area, not like illegal levels of information, just, more than you have without them. Make no mistake, these are all valuable services that large companies will pay a lot of money for.