New "hybrid" organizations mix philanthropy and capitalism -- not a little of one or the other, but an aggressive pursuit of both. One example is Omidyar Network. http://bit.ly/6Jb08D
Sounds like good old 'corporate social responsibility'. My uncle, Carlton Spitzer, wrote a great book in the early 80's called 'Raising the Bottom Line'. Recently he included a portion of this book in his op-ed column about the efforts of Juanita Kreps in 1977... Would love to see this movement really stick this time.