Hyperpluralists argue that the "fundamental flaw" in both market capital theory and plural theory lead to the inevitable creation of an elite political system.  The fundamental flaw in both systems is the assumption that people agree to "play by the rules of the game" and do not seek to subvert either system.  It can be argued that when two of the fundamental asumptions of each theory are "self-interest" and "rational calculation", both systems encourage people and/or groups to seek to subvert either system when a rational calculation indicates that it is in their self interest(s) to do so. As a result groups will take either political or economic advantage and translate it into the other (ie.  take economic advantage and translate it into political advantage).  They will then repeat the process with the new advantage (ie., then take the newly created political advantage and create more economic advantage).  The process continues to spiral until a relatively small number of groups dominate all of politics AND economics.  Such an approach is explored in Creel From's The Two American Political Systems:  Society, Economics, and Politics.