CHARLIE MITCHELL In “Lonesome Dove,” the cowboys crest a hill and see a gentle valley with ample timber, grazing and water. “This will do,” is how they end their months-long cattle drive. They had found a place to settle down, seek prosperity. In 2015, they’d need to know more – a lot more. We live in a time when copious research precedes any decision by any national company on where to launch an enterprise of any type. Before a “go” decision is made, the executives know the average income of all residents in a defined area.