For the most part, the United Nations is known for improving human rights, developing economical and social programs, and peacekeeping. But even if it were fully funded, programs like the Arc and social enterprises will always be needed.
The United Nations can be seen helping countries recover from natural disasters, but afterwards in order for countries (especially third-world countries) to sustain themselves, this is where social enterprises are needed and step in.
Social enterprises pave the way for people to solve issues as a community in order to create social, economic, or environmental change while seeing a generation of income. In other words, social enterprises provide education where there is little, and the ideas generated are what create sustainable change.
Educating others creates economic opportunities, and because of this, they can build a better future.
References
http://www.investopedia.com/terms/u/united-nations-un.asp
http://skollworldforum.org/about/what-is-social-entrepreneurship/
http://news.ubc.ca/2014/06/30/upward-arc/
Photo Reference
http://media-cache-ak0.pinimg.com/originals/20/17/7c/20177cc6fda22d25398af79fd23e2d4e.jpg