Identify the unstated $($implicit$,$ unexpressed, tacit$)$ reason that is discovered by means of a successful counterexample by possible conjunction against the following argument or explanation.

$$

Complaining customers represent a huge opportunity for more business. So$,$ business owners and managers ought to get excited about complaining customers.

Identify the unstated $($implicit$,$ unexpressed, tacit$)$ reason that is discovered by means of a successful counterexample by possible conjunction against the following argument or explanation.

$$

Complaining customers represent a huge opportunity for more business. So$,$ business owners and managers ought to get excited about complaining customers.

The opportunity is too costly in terms of time.

Business owners and managers care about making profits.

Business that have complaining customers have already declared bankruptcy. $$

The businesses will no longer be selling the products or services that the complaining customers will want to purchase in the future.

The costs of compensating complaining customers outweigh the benefits of doing further business with them.