When people ask why a giant like Stripe or Visa won't just swallow the stablecoin market, @rooqster thinks they're missing the scale of it. They're picturing a new feature on a checkout page. He sees the plumbing for the entire world economy: a market bigger than AI, energy, and defense combined. At that size, no single company owns all of it. Even a massive system built inside Stripe's own walls only touches a fraction of global trade. @raincards's bet: the winner won't be a closed system…