You could start 10 businesses on the Web for the cost of starting one brick and mortar.
If you learn a little bit about web development, and learn a lot about
SEO, you can create revenue streams for little or even nothing. Online stores, ad supported sites, affiliate sites, all that stuff can be done very, very inexpensively if you do most of the work yourself.
And a lot of people are making a lot of money by not trying to create the next Facebook and just focusing on having a bunch of passive income streams. The more passive income you have, the more free time you have. The more free time you have, the more passive income streams you can create. And it's a pretty awesome cycle.
Just don't get caught up chasing pussy or building race cars. That stuff will come if you keep the main thing (success and having power over your own life/not working for others), the main thing.