Starbucks (SBUX -2.27%) is the largest coffee shop chain in the world, having practically invented the concept. However, it's a good example of how an industry giant can start looking like a dinosaur if it doesn't keep up with the times.It's not there yet, and it's working on a recovery.Let's see what's happening now, where it's going, and whether it makes sense to buy Starbucks stock before it reports third-quarter results on July 29. Struggling to stay hotStarbucks has been through four CEOs over the past ...