3. California: Larry Ellison
Larry Ellison, the founder of Oracle Corp, has a net worth of $47.5 billion. Although Ellison stepped down as the CEO of Oracle in September 2014, he still is in touch with the Oracle employees. Ellison announced in June 2015, that Oracle was increasing its cloud-computing venture, just in direct opposition with the web services of Amazon.com. It can be a new source of development for this database-software giant.