Not wanting to expose yourself to legal liability may be good business sense, but it is absolutely a choice they are making. It's not like they are under a consent order from the DOJ not to tell these guys why their account was suspended.

This sounds like splitting hairs but I think it's a meaningful difference. Powerful people and companies use Bullshit as a means of obfuscating their motives and actions. They hire armies of lawyers and PR flacks to message everything in a way that absolves them of responsibility. You can't just take stuff like this at face value.

They just murdered a business partner's company and won't even tell them why. It is possible that he's lying to us and was doing some shady shit (shady people almost never tell you they are being shady), or it is possible that he just got crushed by a Kafkaesque bureaucratic machine.