Institutions care about risk management. Ensuring that their customers' funds are not at risk to any one single anticipated failure, nor to one software provider is a requirement for adoption.
@BitcoinSuisse_ are one of the OG custodians and staking providers. They have over a decade of experience to prove that they understand risks in Ethereum, and what they mean for their customers, auditors, and regulators. They went all-in on Distributed Validators, and before long all other institutional staking offerings will too.