Betting on a turnaround is tough, but in this instance, it might make sense to do just that.Having exposure to the S&P 500 in recent times has been a fruitful endeavor. The broad index of 500 large and profitable U.S. businesses has generated a total return of 96% in the past five years, virtually doubling one's capital. That's a fantastic outcome.Not all companies have performed even remotely as well for their shareholders. Etsy (ETSY 1.36%), for example, is actually down 4% since August 2019. The online m ...