As Frye says, Differences of power are always manifested in asymmetrical access. The President of the United States has access to almost everybody for almost anything he might want of them, and almost nobody has access to him. The resources of the employee are available to the boss as the resources of the boss are not to the employee. The slave is unconditionally accessible to the master. Applying Frye's notion of social power to schema-making is easy enough.
Standards are sites of social power.
Controlling them confers power. Access to standards is largely asymmetrical. Institutions that control a schema qua standard have access thereby to the understanding of a world-chunk formalized by the schema. But few who use, directly or indirectly, the schema have access to it. Schema-makers have access to those who use the schema by influencing, even determining, the ways in which they interact with parts of the world.