CME Group chief executive Terry Duffy, who has been one of Mr Bankman-Fried’s fiercest critics, said he would not stop cryptocurrency futures trading because of “one bad actor”.
Cboe Global Markets, another Chicago exchange, and software provider Trading Technologies also recommitted to digital assets despite the FTX meltdown.
“I am not prepared to say I would delist it,” Mr Duffy, 64, said in an interview this week, in which he recalled his spat with Mr Bankman-Fried at an industry event in March.
“We have been at the cutting edge of innovative products, but what we don’t do is do it in a reckless manner.”
Executives at futures exchanges had expressed concerns about FTX’s business model before the collapse.
The bankruptcy of FTX potentially caused billions of dollars in losses for millions of account holders and resulted in investigations into allegations of wrongdoing.
“These events reinforce our strategy,” said Chris Isaacson, chief operating officer and chair of Cboe’s digital board, on Friday.
“If there is ever a time where trust in markets needs to be built and reinforced in digital assets, it is now. That is what we are committed to doing.”
Mr Isaacson said Cboe will continue with cryptocurrency futures trading.
Jason Shaffer, executive vice president of product management at Trading Technologies, said his company would stay the course as well, and that customers want to engage in cryptocurrency in the same way they trade other currencies.
At a Futures Industry Association event this week, conference goers compared FTX’s collapsed to energy trader Enron, which went under in 2001 and became a symbol of corporate fraud.
And Christy Goldsmith Romero of the Commodity Futures Trading Commission went as far as to draw parallels to the worldwide financial crisis.
“Opaque, complex, leveraged, unregulated products, highly interconnected market, concerns about the quality of underlying assets, high potential for contagion risk,” she said. “These are the types of things that existed in 2008 that I see parallels with now.”
Mr Bankman-Fried was a driving force behind a failed campaign to penetrate traditional finance. He proposed handling every step in a cryptocurrency derivative transaction — clearing trades and eliminating the middlemen that in many cases help spread the risk.
If approved by the CFTC, the plan could have increased risks for the traditional industry and disrupted business models such as CME’s that have been around since the late 1800s.
The plan drew attacks from Wall Street businesses and heightened calls for more oversight of Mr Bankman-Fried’s company and its rivals.
The idea was “rubbish from Day 1”, Mr Duffy said. “I’m surprised so many people were enamoured by his nonsense.”
Another critic of the plan was ICE’s founder and chief executive Jeff Sprecher. At the FIA event in Chicago on Tuesday, he said, “Generally speaking, you can’t have an exchange, a market maker and a clearing settlement organisation under one roof.”
Mr Bankman-Fried, 30, has been a key donor to the Democratic party. He gave about $40 million to candidates in the past two years, nearly all to Democrats, and has visited legislators in an effort to affect developing cryptocurrency regulations.
Mr Duffy said he hoped politicians who received the donations from Mr Bankman-Fried would return them.
“I never bought into the whole thing,” he said.
Politicians who accepted his money will be quick to show “they are not influenced by that”, Mr Sprecher said.
Regulators are probing whether Mr Bankman-Fried and his associates misused customer funds, and his company’s collapse is adding urgency to a Washington push to transform the CFTC into a top cryptocurrency watchdog, the agency’s chairman Rostin Behnam said at the FIA event.
While the industry may take a breather for now, it will come back when confidence is restored, said Ram Vittal, North America chief executive at Marex Group, a futures and options broker that has a partnership with Coinbase.
“What is the ingredient that will be the spark? The proper regulatory framework that allows everybody a lot more conviction so that some of these FTX-like things don’t happen,” Mr Vittal said.
Rob Creamer, chief executive of Chicago-based proprietary trader Geneva Trading and chairman of FIA’s Principal Traders Group, said there may also be opportunities ahead.
“It is dangerous to say there is no value in crypto or the underlying technology because Sam did X, Y or Z,” he said.
“Seeing what happened post-Enron, there may be a lot of opportunity for a reputable company with strong governance to pick up the pieces of FTX.”