Being successful does not excuse being a jerk and people behaviours/relationships are not to be mistaken with statistical behaviours/relationships (like correlation and causation).

Don't defend him while trying to separate the fact that he was the king of jerks because you have spent big money on his products. Does not work that way. Sorry.

"One time, my wife, then fiancée, and I were meeting with Steve at Apple, and he wanted me to do a keynote that happened to be scheduled on the same day as our wedding. With a big smile and full of charm, he suggested that we postpone it. We declined, but he kept pressing. Eventually my wife countered with a suggestion that if he really wanted “her” John so much, he should loan John Lassiter to her media company for a day of consulting. Steve went from full charm to ice cold really damn quick. "