Kevin O'Leary, a 'Shark Tank' investor, expressed his astonishment at the rapid growth of Meta Platforms Inc.'s Threads app, which amassed 100 million sign-ups within days of its launch. O'Leary predicted that small businesses would witness higher returns on their advertising investments due to Threads' soaring user base. However, Threads' ability to facilitate text-based posts, similar to Twitter, has sparked a potential legal dispute with Elon Musk.