The button's positional leverage peaks at 1000bb. The cutoff answers with nuts-or-nothing discipline.
4-bet almost nothing but aces. Even KK often prefers a call — building a 1000bb pot preflop with one pair is a strategy of despair.
The steal war's counterattack: your cutoff open, their button 3-bet. Wide meets wide, and they have the seat.
Assumes a standard 3-bet; 4-bet to ~2.2–2.5x the 3-bet. Deep, favor calls over 4-bets — a 4-bet pot at 500bb+ commits you with range disadvantage.