In the end, good products and strategies win. Betting against Tesla is dumb because they've proven the doubters wrong about their products and strategies over and over again. They've stayed right on course with the ten-year plan they laid out ten years ago, and every product they've built has been loved by an overwhelming majority of its owners. Not many companies can say that, not even successful ones.
Short sellers need to tip their caps and recognize that Tesla understands what it's doing better than they do. The longer it takes them to realize this, the more money they're going to lose.