Visa Inc. (V, Financial) is a household name, and for good reason. That little blue-and-gold card has become a global symbol of convenience, tucked away in wallets around the world, supported by strong financials, a dominant market position and strategic investments in emerging technologies like blockchain and digital wallets. However, with its stock trading at a premium price-earnings ratio above 30 and facing rising competition from fintech disruptors like Block (SQ, Financial) and PayPal (PYPL, Financial ...