It's hard to say, from just this snippet. You forgot to mention that Chizen tried to slime his way out of the problem by claiming he was only hiring junior-level staff. So Steve responded, rather sarcastically, "Okay, so everyone is open game then?", and then Chizen goes "No I was just kidding! Let's just be friends! Tee hee!".

I mean, Steve was a douche for a lot of other reasons. But this is savvy business right here. He had Chizen by the balls. Considering there's no mention of Apple intentionally trying to recruit from other companies in this article, I have to assume (until other evidence is provided, of course) that Apple was not doing such things.

To me it sounds like Steve knew he had the advantage, and he exploited that to keep his top talent where they were.