Will starting a for-profit instead of a non-profit cause me to veer from my social impact mission?

I started a non-profit and spend most of my time going to foundations, sponsors, and governments looking for money. Most only give the money for a year, so I have to do this every year. As my non-profit grows, I need more money.

I want at least two years of working capital in front of me so I can focus more time on developing my team and organization. There is a part of me that does not like for-profit ventures – I think they may take me away from my mission. Our mission is to educate, inform, and empower as many people as possible. We don’t want to start charging people because those who will most benefit from what we do can’t pay. The other side is if we become financially sustainable, it will let me and my staff focus on the programs instead of fundraising. But, from what I hear, for-profit investors are ruthless and only looking out for themselves.