As of December 4, 2025, MoonPay remains the most heavily defended on-ramp (harder than Transak/Ramp), yet still the #1 target because of its massive reach: 180+ countries, direct widget in MetaMask, Coinbase Wallet, Ledger Live, Phantom, and 500+ partners, instant BTC/ETH/USDT/USDC/SOL buys up...