Insofar as the person’s life makes calls upon IQ related abilities the higher IQ individual will enjoy an advantage. However, such an individual could be at a considerable disadvantage simply because he will be abnormal. The society will value particular knowledge and skills and discount the value of intelligence. Indeed, intelligence may lead to behaviour which is viewed as dangerous because it is innovative.
Even if his high IQ does not result in behaviour judged to be “dangerous”, the high IQ individual will find his intelligence to be of far less use and advantage than it would be in a high IQ society because the range of problems to which the person’s intelligence can be harnessed are much more limited than they would be in a high IQ society.
The exception to this rule is where the high IQ minority is the controlling elite, either because they hold formal power (various Latin American countries) or because the country is de facto dependent upon them to maintain the proper functioning of society (South Africa).