Tim Cook has been groomed for years, Steve has a first class team now - Jobs remembers his last mistake at Apple and won't repeat it. One thing Jobs is not, is stupid.
Somewhat off topic, but relevant:
I, unfortunately went to IT school in Seattle, WA, around 2000, (originally it was to be Vancouver B.C, such is the price of love at first sight - 5 years married) I was required (forced) to take Win 2k Server as part of a UNIX System Administration track. Ultimately it became useful, but more in a "backwards and in high-heels" way. Our Windows teacher was such a zealot that he equated stock price to superiority of OS platform, Apple was in the midst of rolling out OS X at this point and their stock was something like $11.00 a share, Microsoft was $33.00.
I was so poor at the time it wasn't funny, I told everyone "BUY APPLE" up and until 2003 or so, many of my more wealthy friends did. Some put their children through college with that tip (yes, me = SuperGenius).
I never would ever equate stock price with OS performance, and I often think back on my poor MS teacher and know what a hard lesson he learned.
Me? Lovin' the UNIX and the Plan 9.
New tip: buy electrical utilities and general infrastructure - long term.