For years, the standard partner go-to-market advice has been to pick a motion, usually Marketplace or Co-Sell, and push it harder: better listing copy, another designation, one more campaign. That advice is not wrong so much as incomplete. A partner can max out a single lever and still see nothing move, because the lever it optimized was never the thing actually holding growth back.
The corrective now circulating is that growth requires a reinforcing system: multiple motions working together, not one motion carrying the load alone. That correction is directionally right, and it still leaves the reader with nothing to do Monday morning. "Build a system" describes an end state. It does not say where a partner sitting on five working motions and one broken one should look first.
There is a third answer, older than either of the first two, and considerably more specific.