A certain sort of ruthlessness and lack of empathy, accompanied by having an extraordinarily driven personality, certainly seems to often make things happen (see also: Steve Jobs). The ages-old question is – is it worth it? Do ends justify the means?
I feel like Jobs was successful despite being abusive, not because of it.
Being ruthless, manipulative and dishonest is highly effective, that's how Con Men get to be so successful. It takes a sociopath to pull it off and it doesn't work out well in the long term, but people only live so long anyway.