The board wants a de-risking story. Procurement announces a second source in Vietnam. Six months later, the new site is shipping the same standardized brackets the old site always shipped — and the single-sourced sub-tier component that actually stopped a line last year is still single-sourced, in one city, in China.
That gap is the whole China+1 story. The phrase became a slogan long before it became a footprint.
It isn't hard to see why the slogan ran ahead. Companies did not diversify because they ranked their risk. They diversified because the word was everywhere, and a stated intention is cheaper than a qualified second source. A press release does not need a quality plan. A steering committee does not need a supplier financial audit. So the easy, already-stable categories moved first, and the categories that would actually hurt you in a disruption stayed exactly where they were.
The numbers tell the same story from the other side. McKinsey's 2025 supply-chain pulse found that 82% of surveyed companies had been hit by tariff or trade-policy shifts, and the share running a regionalized sourcing model climbed from 44% to 64% in a year (McKinsey, "Supply Chain Risk Management" pulse, 2025). That sounds like real movement. But Flexport's Asia trade data shows China's share of the region's outbound volume slipping only from 47.3% to 36.6%, with Vietnam the main beneficiary at 11.7% (Flexport, Asia freight analysis, 2025). The drop is real but gentle — and the volume that left was mostly standardized assembly, not the constrained, single-source depth beneath it.
The Risk Is Not Where the Map Points
Here is the part that gets missed. The risk in an Asia supply base is rarely "assembled in China." It is one level down. It is the sub-tier supplier that only a single factory uses. It is the critical material that flows through one converter because the alternative is unqualified. It is the financial health of a partner you have never audited because they sit beneath your tier-one and your tier-one never gave you their name.
None of these show up on a "where is this built" map. They show up as a line stoppage on a Tuesday.
A diversification program that only moves what was easy to move has not de-risked anything. It has re-labeled the safe parts as "covered" and left the exposure untouched. The announcement closes the conversation in the boardroom. It does not close the gap on the shop floor.
Three Moves That Turn the Slogan Into a Footprint
- Rank by break, not by flag. Stop sorting categories by "is it made in China." Sort them by break probability multiplied by recovery time. A standardized bracket made in one city is a flag, not a break — you can qualify a second source in a quarter. A sub-tier ceramic made by one supplier with a two-year qualification cycle is a break, even if it is made next door. The flag drives the announcement. The break should drive the work.
- Treat the second source as a qualification project, not a purchase order. A second source is not real until it has passed your tests, held your volume for a sustained run, and survived a quality audit you actually ran. Until then it is a logo on a slide. Most Asia diversification programs stall here: the supplier is named, the contract is signed, and qualification is assumed instead of funded. That is why the footprint lags the slogan by a year or two — and sometimes never arrives.
- Price the status quo honestly. The case for moving is usually built on the cost of the part. The case against moving is buried in everything else: the quality ramp, the freight you forgot was implicit, the management bandwidth, the inventory you have to carry at two sites instead of one. When teams finally price the whole move, some categories come back "stay" — and that is a fine answer, as long as it is a decision and not a default. The risk is the category you keep in China because nobody ran the full math, not the one you kept because you did.
Why This Gap Persists
Part of it is measurement. "Number of second sources announced" is a number a procurement leader can report. "Number of second sources qualified and shipping at target yield" is a harder number, and it is smaller. So the softer number gets reported, the real one gets deferred, and the next annual review repeats the announcement.
Part of it is that the real risk is invisible by design. Tier-one suppliers are incented to keep their sub-tier map to themselves. The component that will break you is owned by someone three layers down who has never been in your building. You cannot diversify what you cannot see, and most teams never pushed hard enough to see it.
The Asia sourcing landscape is genuinely shifting — BCG projects semiconductor manufacturing capacity spreading across five regions by 2032, up from today's concentration (BCG, semiconductor supply-chain analysis, 2025). That is real structural change, and it is the kind worth building toward. But it is a capital project measured in years, not a slogan measured in quarters. Confusing the two is how procurement ends up with a de-risking story and the same old single points of failure.
Diversification you announce is not diversification you own.