We throw people in jail for committing fraud. We don't throw them in jail for making bad investment decisions within the bounds of the law. While I am loathe to defend SVB's management here, your line of argument leads to a world where either (1) everyone commits outright fraud with impunity, or (2) everyone goes to jail. Neither world is any good.
My line of argument is one where the role of a prosecutor or judge or LE of any kind is a very serious one
These people should be spending their free time reading papers and books on how Romans enforced their laws over remote German provinces of the Empire.
Instead they open all sorts of media and like hunters in the forest they pick a trophy that suits their liking and then they just use all their means to collect that trophy.
Or even worse they are not even creative in their trophy hunting quest, they all pile on Trump because by the way he looks and acts he looks like a fraud and advertises his nature thanks to his huge megaphone . So every prosecutor in the Nation piles on him because they want to be the one uncovering this big revelation to the American public...pathetic.
Their goal should be ratio of Money recovered from criminals to money spent for investigations/proceedings. No one operates this way because they are essentially predators, much like SBF and Trump are, just a different kind, but they receive a salary paid for by taxpayeyrs.