A group entity is just any mob, faction, political party, corporation, union, government or even nonprofit entity that has no body i.e. inherent biological identity of its own. Individuals, families, and species may not be group-entities, although anything beyond a single sexually reproducing being may well be called one. It is a very abstract term and is an alternative to such terms as online community that does not imply any common behaviors or traits between physical human or other animal communities, and organizational behaviors.
This term is from anarchist discourse and may be controversial to some. See w:group entity for a deep analysis of why such entities tend not to behave like humans, or as if they care about humans.
They influence Consumerium Services mostly by providing institutional buying criteria, and, by making some threats that threaten them into worst cases by their body-less body-hating influence.
The tendency of humans to form group entities to avoid responsibility is called limited liability. The way humans rationalize this, and pretend that they did not deliberately create the comprehensive outcome, is called groupthink. If a group does something, no one is responsible even if all refused to stop it.
The Consumerium Governance Organization should approve all arrangements with any group entity, if only so that legal trust issues remain clear. This is particularly important for such stuff as patent pool management or other Consumerium License provisions where groups might become constrained by dealing with Consumerium.