I still don't get it. If the non-profit you choose to work pays in the low 30s, that's more than the $20K you need, and you get to invest your $100K for your future instead of risking it in a business, plus you get to invest the $10K difference between what you need and what you earn. You want to matter and benefit society as a whole? Go work for a non-profit. Would it really matter or benefit society as a whole if you had an office cleaning business? If you were a closet organizer?
A lot of people here are anti-consumerist liberal feminists. Like me. And I bet they can be themselves and work among those that don't share the same viewpoints. Sure, some people I work with (again, this is at a non-profit) love their consumerist crap and some lean to the right politically. It's called life, people are generally different from one another and it's not a problem for the most part. Nobody needs to pretend to be someone they are not, you just need to be respectful towards one another. It's really not that hard most of the time, and if you find it.
To echo others here, I think you are putting the cart before the horse here. You are looking for a solution (and have your heart set on one, starting your own business with 100K) and you haven't defined your needs yet. Maybe this is the wrong solution to meet your needs.