It's often people like Steve Jobs who can draw from a deep reservoir of diverse experiences that often generate breakthrough ideas and insights.

这是强调句型。其结构为：It is ... who/that ...

被强调的成分是句子主语： people like Steve Jobs 像史蒂夫•乔布斯这样的人。

often 在这里是个推测性副词，是对主语people like Steve Jobs 这类人的可能性推测，意为“往往是；一般情况下”。