If you think what I say is not possible, think again.
You really can have photo realistic, same-as-life golf courses, you just need to be skilled.
Photo realistic does not necessarily mean you need to take photos of an existing course.
You can take pictures of terrain, trees, all nature's features, and put them together, the same way you would with a real course.
With the above mentioned super-computer we have these days, this is indeed very possible, you just need to use imagination.
See where I'm going?
PS: very powerful computer are accessible at affordable prices nowadays.