Is concerted criminal activity by individuals within a group sufficient to establish an 'enterprise' under RICO even if there is no evidence of shared profits or a common group purpose?

QUESTIONS PRESENTED Is concerted criminal activity by individuals within a group sufficient to establish an “enterprise” under RICO even if there is no evidence of shared profits or a common group purpose, and did the Fifth Circuit err in finding the existence of a structured “enterprise” based on a “common purpose” of “selling drugs” absent evidence of a centralized drug distribution chain or decision-making framework? ii