Two tech firms, AlphaTech and BetaSoft, each pay MediCare to provide health insurance for their staff. Because early diagnosis of diabetes can prevent severe complications that would otherwise occur several years later, MediCare encourages AlphaTech employees to get their blood sugar levels checked and to seek early treatment for diabetes. BetaSoft employees typically stay with the company for only a short period, however. Therefore, MediCare lacks any financial incentive to provide similar encouragement to BetaSoft employees.

Which of the following, if true, most seriously weakens the argument?