(1) It is only my opinion that "would change for him" in your
example definitely does NOT mean "because of him."
When the world changes for you, it means that your outlook
on life changes. Perhaps one of the biggest ways the world
changes for a person is the time when one's mother dies.
Before she died, a person has a certain attitude toward life
in general; after one's mother dies, the world seems to be a
diffferent place. Many a poet has commented that after his/her
mother died, that poet was never again the same person. In other
words, your perspective starts to change (you start to realize what is
truly important in life). If that quotation is about Mr. Jobs, then you
can see how his inventions have truly changed his outlook on life.
I do not know anything about him. I can only guess that before he
got into the computer business, he had one attitude toward life. After
his computer business became successful, I can imagine how much the
world (that is, life) changed for him: money, power, fame, fear(?)
started to be a part of his life. Before he was successful, I am
guessing that those things (money, power, etc.) did not figure much in
(1) I hear that Mr. Jobs is ill. I am sure that we all wish him the best.
(2) I cannot answer your first question.
***** NOT A TEACHER *****