It's already climbing this year, but the real potential is long-term.Whenever it looks like a company is too huge to be challenged, there will always be a smart entrepreneur who will find the niches that aren't being met and crack them open. That's what's been happening with coffee chain Dutch Bros (BROS 1.32%). It can't really compete with giant Starbucks, but instead, it's found a way to connect with its customers with its own culture and set of rules, and it's taking off.Investors had high hopes for Dutc ...