Yesterday when a friend quoted the old saw "If you're not part of the solution, you're part of the problem," I came up with in response:
:But if you're not part of the cliché, you're part of the proverb!
TopicHumor - Datetag20020116
I have also heard this:
"If you're not part of the solution, there's good money to be made by prolonging the problem".
It's called "the consultant's manifesto"
(correlates: SolublesInsolubles, LongDistanceFriendliness, LeonidSightings, ...)