Heres a snippet from Forbes
WGT’s golf-game success is in large part the result of its painstaking attention to the look and feel of each course. Sun dapples the fairways, and wind rustles the trees(ONLY WHEN THE BALL HITS THEM) in each of the 15 courses it has captured so far, including Congressional, Bethpage Black, Olympic Club, Pinehurst No. 8, the Old Course at St. Andrews and the Kiawah Island Ocean Course. It is adding two to three new ones per year,(LMAO) and there’s a waiting list of 14 courses from countries such as Japan, Korea, Sweden and Brazil that want to be incorporated into the game.
Once a course is done and WGT has recouped its costs from the first several thousand players, it makes a healthy marginal profit from each additional player who tees off.