If they were a bank they would realize their growth is beyond their competence and bring in boring big bank security experts with some of the huge profits on the even more massive holdings.. But there were no legal profits on holding all these assets because they promised to be something better than a bank, making its money from risking your assets, so that was just done illegally leaving no above the table accounts for legitimate operation costs. (A friend of SBF with an illegal loan will obviously keep your keys safe.)
How could an honest company that takes negligence seriously compete? It is like the opposite of regulations as barrier to entry. How do you sell things for less than the Mafia's laundering operation?
Of course, but the qualifier I used is "make a case".
Obviously, nobody can ever read SBF's mind, but the government might have enough to prosecute him from this angle if they could prove that he knew better from his behavior with his own holdings, but didn't do things in a certain way for FTX's holdings.