The peg broke because during times when the market is extremely volatile: 1. Exchange deposits/withdrawals are slower and more expensive because of ethereum ne

The peg broke because during times when the market is extremely volatile: 1. Exchange deposits/withdrawals are slower and more expensive because of ethereum network congestion 2. Other assets have larger price disparities across exchanges Because of this reason, arbitrageurs have better pairs to arbitrage with their assets during these busy times. Why make 10% on usd/usdt when you can make 15/30% on eth or altcoin price dislocations across exchanges?