Economist Mancur Olson suggested that interest groups tend to have a harder time getting around the free-rider problem as they grow larger because: Group of answer choices leadership loses its tight control as membership increases. people outside of the group come to see them as a corrupting influence. their efforts have diminishing returns as the group becomes entrenched in the political mainstream. individuals do not have much incentive to become active members and supporters of a group that is already more or less working on their behalf