Ummm, develop a social media website that goes crazy huge all over the world
own and operate an airline
Open a chain of restaurants all over the world
Affiliate programs and social media go very well together. You could probably do well with an online store and a few hours on a social media site
Something that you have the resources and interest to do. Franchises can be a safe bet for start up business.
Automate US trains
I'd love to be rich, just like everybody else. I want to work my *** off for it, do something that I can run myself, such as own a hotel. What other good ideas are there?