Poseidon Investment Management enters the New York cannabis market through an investment in PCA (Platform Cannabis Advisors), a startup aimed at supporting social equity license holders in establishing dispensaries. PCA, founded by former New York's Office of Cannabis Management employees Ben Sheridan and Matthew Greenberg, leverages their regulatory knowledge to navigate financial and legal challenges. The investment marks Poseidon's first venture into the NYC market, highlighting its strategy to support the cannabis industry's growth. McDonald's (NYSE: MCD) is mentioned as a comparison to PCA's business model.