However, Gellman is just far too unstoppable to stand everything. His mind is genetically full blown depravity, even if it's combined with psychopathy after all, because his family originated with a strange nosed screamer who succeeded to the point of excess in merchant commerce and murdered his boss.
It's not just his depravity, it's also his very different mind which is focused a lot on killing everyone, pretty much to suit his amoral corporation's needs.
Yep, this is also quite similar for his family altogether, as they are like nearly all the fucking great old European houses of the Renaissance, which share a gruesome history with each other in common.