Spot on. Must also add there were cultural factors in technology when Jobs was at the helm yet he seemed less concerned with appealing to all demographics and establishing a fashion brand. He believed if you design a great product it will sell itself as opposed to developing products for profits sake. CEO's think solely in terms of profit and market growth, which has almost always proved short-sighted, leading to failure as a strong company that grows too fast without a truly solid product and market base will falter in the end. It's very similar to the startup mindset in Silicon Valley; most aren't concerned with developing a passionate product or service for the long-term. It's a "shake-n-bake" system based on short-term thinking - create something in a few months and pitch it to the highest bidder, rinse and repeat.
Cook is operating Apple in this similar mindset that many CEO's before have done with the false sense of security based on their current status and success. Yet such short sightedness and focus on growth lacks the vision outside their singular strengths and almost always backfires. The time frame may differ between corporations (differing factors such as market strength, stock value, market saturation, etc), but it always leads to the same road.
Jobs was less concerned about profit and more about making something unique, whether it was perfecting already existing technologies or developing new systems. He was headstrong, difficult, a perfectionist, narcissistic, and I'm certain more but it was never personal, it was his passion. When he passed many questioned Apple's future, alarmists especially yet many cautioned for more reason. It's becoming clearer that Jobs was the heart of Apple. Technology is a rapidly growing and morphing industry that requires someone who can look at the bigger picture as it evolves, see what others don't, and react quickly and appropriately. A road-plan won't last beyond a few months and Cook knows it. He's throwing everything at the wall and seeing what sticks instead of focusing on a specific target.
Steve Jobs didn't have the Midas touch. There are products that failed under his watch. MobileMe was one such example. Ping was another example. Also, his obsession with skeuomorphism was starting to look stupid. One need look no further than the old leather stitching pattern in the Find My Friends app. Jobs wanted the patter in the app to match the leather stitching pattern for his private jet.
You claim that Tim Cook is just interested in profit and market growth. I don't see a lick of evidence for this. Under his stewardship, Apple's R&D spending is higher than it's ever been. If he was engaging in short-term profit-making, this wouldn't be happening. He'd be spending like crazy on marketing existing products, thinking that that's what the problem was. While Apple has been conducting marketing campaigns on its products, Apple is not neglecting R&D spending.
I agree with your claim that Steve Jobs believed that to make a product, you had to start with a great product that customers would want to buy but I don't see any evidence that that thinking has changed under Tim Cook.
I find it ironic that people have made Steve out to be a perfect CEO-that he never made a wrong decision as a CEO-but those same people are so quick to question his choice of successor.