Have you worked in this area?
I have worked with asset managers, employees come from all around the world and vary in background. Yes there will be a weighting to the more privileged kids but most of the jobs don't make big bonuses. That's just the Sales leads and funds managers.
But it's irrelevant. As the institutional investors who invest are doing so for their underlying investors e.g. Pension Funds.
The people suing, if win, will report higher results and their bonuses will be higher but so will the underlying investors.