What are the definition of success for an exchange and why some of the exchanges failed? If you look at Mt. Gox, FTX and Bittrex and few other exchanges that was shut down you will see something common in them and that is mismanagement. Mt.GOX was hacked due to proper security concern, Bittrex was shut down due to regulatory concern, FTX turned into a fraud house. All this happens due to mis management of those exchanges. Crypto exchanges business is already a profitable one due to lots of sector for revenue stream. What a proper management can do in crypto binance is a prime example of that.
Currently have many exchange stop operation currently with many reason from hack cases until the owner of exchange scam their member, Bittrex exchange collapse seems difference with other exchange although close operation they have give chance for their member withdrawing their assets without freeze or suddenly close the exchange operation such as FTX of Mt.Gox.
Mt.Gox is older exchange collapse after hacking cases but most of their bitcoin stolen success getting back and has rumor almost last several years ago they will refund BTC to their member account but until right now still not refunding yet. Difference cases with FTX have been collapse after scamming by the owner its self, I think its very bad cases how the bigger exchange has not trusted owner and selling their member assets in FTX exchange.