By the time Ferrari realized their final-sector monster was bleeding time through the hotel section, it was too late to salvage fourth.
There's a moment on lap 52 where Leclerc carries fifteen more kilometers per hour than Russell through Turn 14, apex perfect, rear locked in, the Ferrari absolutely planted through the high-speed kink that leads onto the back straight. He's a second clear of the Mercedes by the time he crosses sector 3. And none of it matters.