Meat - there is an established and growing market for elk meat. It is highly regarded in fine dining establishments and gourmet centers. Many people say it is similar to lean grass fed beef. Sales to deer or game parks and exhibits. They were once very common on the plains and in gulf coastal regions where they do well with proper care.
Elk are wild animals.
Today, it is illegal to capture wild Elk, and no reputable modern elk rancher does so. The elk we raise are domesticated, descendents of elk raised behind wire for as much as 40 generations. With good, knowledgeable care, elk thrive in an agricultural setting. There are differences in design between elk fence and cattle fence, but elk fence costs only slightly more. Again, elk are grazers just like cattle.