Saudi Arabia is opening Mecca’s doors to foreign investment. The move could unlock billions as Crown Prince Mohammed bin Salman looks to diversify the nation’s economy, Zainab Fattah reports. -------- More on Bloomberg Television and Markets Like this video? Subscribe and turn on notifications so you don't miss any videos from Bloomberg Markets & Finance: https://tinyurl.com/ysu5b8a9 Visit http://www.bloomberg.com for business news & analysis, up-to-the-minute market data, features, profiles