MARI, the holding company founded by Ari Emanuel and Mark Shapiro, is expanding into collectibles. The experiences-centric venture is acquiring Collect-A-Con, which holds events celebrating trading cards, anime, gaming and pop culture across the U.S. The company was founded in 2021, and this year is slated to hold 24 events, with more than 500,000 annual attendees. The events bring together mercha...