Consumers might be tightening their purse strings, but they're also willing to make some exceptions to their cost-cutting. It's been a tough past few weeks for Dutch Bros (BROS 2.88%) investors. Shares of the up-and-coming chain of coffee kiosks are down 26% from their late-June peak, unwinding what looked like a budding rebound effort. Concerns about lingering economic weakness are the broad culprit. With spending money getting tight, the market is afraid that premium beverages are vulnerable. And it's not ...