Intelligent people are not willing to take risks and not willing to try risks!
The risk of what? Being rich? Everybody wants to be rich.
Yes, being rich requires you to take risk. You won't become rich if you are working a job in some company, you need to start a business(I'm just assuming the most common way to become rich) and starting a business has a great lot of risks involved. An above average individual who is comfortable in his position wouldn't be willing to take that risk.