On June 17, William Quigley, co-founder of Tether and WAX, said that do not expect the momentum of cryptocurrency ETFs to slow down after the approval of spot Bitcoin and Ethereum funds in the United States. Wall Street's "greed" will drive more and more such products. Quigley predicted that due to Wall Street's relentless pursuit of profits, ETFs for other mainstream cryptocurrencies such as Solana and Cardano will also proliferate. He said that Wall Street's "greed" will drive the continuous increase of such products, and if the Bitcoin ETF succeeds, there will be endless imitators. He also warned that Wall Street's aggressive marketing of crypto products could pose significant risks, especially during market downturns.