Amazon could shake the banking industry to its core — but one expert knows how Wall Street can fight

Amazon's reported foray into the checking-account business is a scary proposition for the banking industry, given the company's reputation for disruption. A partner at Bain & Co. argues banks can withstand pressure from Amazon if they focus on one key area. When the news hit that Amazon was in talks with several banks to launch a "checking-account-like product," everyone feared the worst. After all, this is a company that has taken multibillion-dollar bites out of at least five major...