Emma McIntyre/Getty Images for Prime Video MrBeast teased a new membership program at a private advertiser meeting. The world's biggest YouTuber also touted plans to expand into content areas such as food and finance. The gathering during TV upfronts week was a sign of how big creators are gunning for TV ad dollars. MrBeast is planning a membership program as the world's biggest social media star looks beyond YouTube to build a diversified entertainment company. Beast Industries executives sha