Not-for-profit is still a corporation, and the distinction simply means that they need to reinvest profits back into the company. A for-profit company can sit on massive amounts of stockpiled wealth, while a not-for-profit needs to find ways to reinvest that back into the company. To be clear, they can still sit on a lot of money. But all of their money needs to be earmarked for something, instead of just being a rainy day fund.