Stripe continues to hold the title of being the biggest financial technology business still in private hands, with a current valuation of about $65 billion and a whopping $1 trillion in total processed payment volume last year alone. But fintech is fragmented and a fast-moving target, and with competitors chipping away at its place, Stripe is changing up its approach. Today, Stripe announced that it will be de-coupling payments — the jewel in its crown — from the rest of its financial services s...