Now the 4-bet bluffs are gone too — at 500bb, a re-raised pot out of position needs the top of the deck behind it.
4-betting narrows to the very top; suited hands with nut potential call more. The question on every street becomes: which hands are happy getting 500bb in?
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.