People need to have access to education and health - care so that they can rest assured that the one or two children they do have will survive and flourish - this will provide natural incentives to not have large families that can not be cared for. (dotearth.blogs.nytimes.com)
Once you've gotten the business model right, you'll see that consumers have a natural incentive to sign up — and service providers to stay on. (entrepreneur.com)
This combination of elements gave the natural incentive to trade a great deal more room to grow. (bankofcanada.ca)