According to CoinDesk, Ophelia Snyder, co-founder of digital asset management company 21Shares, said that institutional investors are unlikely to worry that the US Ethereum spot ETF cannot pledge Ethereum to provide additional returns, although retail investors are eager to have this built-in function; this difference means that it is possible for suppliers to list separate and different products to meet the needs of both parties; pledged assets will affect liquidity, and institutional investors will want to see asset managers' record of effectively dealing with withdrawal delays because this requires inherent risk management.
There are also government tax issues to consider, and it is unclear how staking rewards are taxed in the United States.