Companies reorganize expecting behavior to follow structure, and it usually does not. The chart changes on a Monday and the working relationships that produce output remain what they were.
Work follows relationships, not boxes
Most day-to-day coordination happens through people who have solved problems together before. Those routes are built on trust and shared context, and a reporting change does not dissolve either.
After a reorganization employees continue asking the same colleagues the same questions. The formal escalation path exists, but the informal one is faster and known to work.
This is generally a good thing, and it is why reorganizations rarely break a company outright. It is also why they rarely deliver what was promised.
Reporting lines change incentives, slowly
What a new structure genuinely changes is who sets priorities, who conducts reviews and who controls budget. Those levers matter, but they act over quarters rather than weeks.
An engineer newly reporting into a product organization will eventually work on what that organization values, because that is what their review reflects. The shift is gradual and mostly invisible early.
Leadership judging the change at thirty days sees no effect and often reorganizes again. Repeated changes prevent the incentive shift from ever completing.
The transition has a real cost
During a reorganization, decisions queue while people work out who owns them. Projects stall not because anyone objects but because the person who would have approved them is no longer certain they should.
Employees also spend attention on their own position, which is rational when reporting lines are moving. That attention is not available for customers or products.
The cost is concentrated in the weeks around the announcement and is rarely counted against the expected benefit, which makes the change look cheaper than it is.
Some problems are not structural
Restructuring is often applied to problems that are actually about unclear priorities, weak handovers or a specific individual. Redrawing the chart addresses none of these.
The attraction is that a reorganization is visible and can be executed by decision. Fixing a broken handover requires sustained attention from the people already doing the work.
When the underlying issue survives, it reappears under the new structure within a few months, which is frequently read as evidence that another reorganization is needed.
What makes one stick
Changes that hold tend to move something concrete alongside the lines: budget authority, hiring approval, the definition of a team's output, or which metric a group is measured on.
They are also explained in terms of the decisions that will now be made differently, rather than in terms of alignment. Employees can act on the first and cannot act on the second.
And they are left alone long enough for the incentives to work through. The most common cause of a failed reorganization is the next one.