A business can appear stable right up until you ask how much of the value disappears when the seller does. Owner dependency is not a footnote. It can be the whole deal.

Before you close, ask the most uncomfortable version of this question: What survives if the seller disappears tomorrow?

That is not cynicism. It is one of the most important tests in an acquisition.

In many closely held businesses, the seller is not just the owner. The seller may also be: the relationship hub, the sales engine, the operational memory, the trust center, the problem solver, the access point.

If that is true, then the buyer is not simply acquiring a company. The buyer may be trying to acquire continuity that is much more personal than institutional.

That matters deeply.

Because the more seller-dependent the business is, the more careful the buyer should be about what the purchase price is really paying for—and whether that value will remain after control changes.

A business that depends heavily on one person may be far less transferable than it first appears.