When the business has a strategy and adequate financial means, it rests with the future buyer to assure that it has high performing operational capacity. They will do a critical analysis of different operational aspects according to the type of target business. For example, the critical point will be the expertise of the team for a tertiary business; the factory for an industrial business; logistics for a distribution company, etc...
In addition, small businesses have recurrent weaknesses such as the director's intuitu personae. It could take a year or more to put a second in command or supervisors in place.