Found it:
Speaking with the Financial Times on July 14, Bankman-Fried stated that if FTX can become the top crypto exchange and supplant rivals such as Coinbase and Binance, the idea of purchasing giants such as Goldman Sachs and CME group is not off the table:
“If we are the biggest exchange, [buying Goldman Sachs and CME] is not out of the question at all.”
https://cointelegraph.com/news/billionaire-sbf-says-ftx-may-...