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If tether does not pays his creditors, will Binance and those others survive?
That's a good question, I would like to know the answer to it
binance and the others aren't net USDT creditors. it doesn't matter to them (financially) if USDT is unbacked and loses all its value. in that situation, binance is still solvent since it still controls all its depositors USDT.
in that situation, it's the holders of USDT on binance that lose money, not binance. this is why kraken always had a USDT/USD market. they can't risk redeeming USDT for real USD because that would expose them to bitfinex counterparty risk.
Binance is one of the main Holders of tether according to tether rich list. As they negotiate high volumes of tether , it's highly unlikely that none of that there is theirs. It's the same as saying they have no btc.
I think thats not even possible because they receive fees for each tether that is negotiated there.