Maybe it had greater assets under management, that doesn’t translate to power or direct ownership. They are custodians and facilitators. Their worth is traded on NYSE and doesn’t exceed top internet companies, who imo have more power.
90 billion is not systemic though. It would hurt the profits of some of the other companies, sure, but it's not anywhere near threatening the entire system.
$90b is not that much for the financial system of a large economy.