How much is too much for a solid, well-respected business like Costco? The thought that investors should avoid Costco Wholesale (COST -0.25%) may seem counterintuitive to many. In 2023, an Axios Harris poll put Costco second among the nation's most admired brands. Its product selection and low prices have brought consistent sales growth for decades. Despite these successes, have investors increasingly begun to question whether Costco stock remained a worthy investment. In 2020, Warren Buffett's Berkshire Ha ...