See some of pg's early essays:
http://www.paulgraham.com/wealth.html
http://paulgraham.com/good.html
Entrepreneurship is one of the least zero-sum activities you can participate in.
It's literally on the YC application form.
"He said to ask about a time when they'd hacked something to their advantage—hacked in the sense of beating the system, not breaking into computers. It has become one of the questions we pay most attention to when judging applications."
The part about "make tons of money" isn't there, but I don't think anyone disagrees with that part -- YC recently launched a separate branch to handle nonprofit ventures.
For good vibes, tax credits, & marketing
Every entrepreneur envisions profit at the end of the process, but it cannot be the primary goal of your company. Profits come from great products and services, so make a great product or service and the profits follow.
You also have to be prepared to work 60+ hour weeks for years, only making enough to get by, and still fail and lose money in the end. A lot of these get-rich-quick schemes claim that there is no work and little risk involved.
A labor-free, low-risk, high-profit career simply doesn't exist. You can pick two of those three things, but not all three.