```json
{
  "price": 190,
  "message": "",
  "note": "Opening with price 190. At symmetric pricing (190,190), both firms earn ~3369 profit per period. This is sustainable under repeated interaction (δ=0.95): collusion payoff exceeds oneshot deviation profit relative to punishment stream. Moderately high price signals cooperative intent while retaining reasonable payoff security if counterpart deviates."
}
```