The Mexican National Antitrust Commission (CNA) has officially denied Visa's request to acquire a 51% stake in Prosa, citing potential risks to competition that could adversely impact users of financial services. This decision came after a detailed analysis, where the commission concluded that such a purchase would have detrimental effects on the Mexican financial system. Members of the commission argued that the acquisition would eliminate a direct competitor, as Visa already operates its own payment processing services.

Moreover, the CNA expressed concerns regarding the future of Prosa’s low-cost card brand, Carnet, which could face obsolescence due to the takeover. The commission emphasized the importance of maintaining competitive alternatives in the market, as the acquisition would significantly threaten the viability of Carnet as a budget-friendly option for users. The broader implication of this blockade reflects the commission's commitment to ensuring a diverse and competitive landscape within Mexico's financial services sector, which is crucial for consumer choices and pricing.

Visa's disappointment is evident, as the company views this decision as a setback in its strategy to expand its influence in the Mexican market. The antitrust ruling underscores the challenges multinational corporations face when attempting to consolidate their operations in regions where competition regulations are stringent, as regulators prioritize consumer protection and fair competition above corporate growth ambitions.