Once you have infinite money, you tend to want infinite power next
People who get to what seems like infinite money only do so because they were seeking money as a means to power for which they have an insatiable desire in the first place, its not that getting to (even practically) infinite money triggers the desire for unlimited power, its that it is a symptom of it.
My actual guess is that they got way too big, both in terms of headcount and fund size, to limit their investments to what is expected to be the best of the best in terms of financial return and societal impact.