> There are countless stories of large scale failures involving non-consultants as well as very well paid consultants. Sure but there are undoubtedly more fail

> There are countless stories of large scale failures involving non-consultants as well as very well paid consultants. Sure but there are undoubtedly more failures involving cost leaders doing the same job as highly paid consultants. It is foolish to suggest otherwise or that there isn't a correlation. Your diminishing returns example might be true, but also doesn't discount the original statement.