Apple 'losing its mojo'
Well you can look at it that way, but consider that Apple wasn't first with any of those. There were existing products in those categories, he just took them from something that sucked and/or appealed to a narrow segment of people and made them appealing to the mass market.
Not saying that doesn't take talent, but before the iPod, before the iPhone and before the iPad you could have looked at the existing music players, smartphones and tablets and said "wow, these suck, this category is ripe to be re-invented and then it could be mass market!" You could have easily predicted that someone would eventually come along and make those products suck less and be something everyone wants, even if you didn't know specifically how it would be done.
So take a look around now, what product categories do you see that are destined to have very narrow appeal until someone comes along and makes them not suck? If you can find one, and you could see it fitting in Apple's product line, then maybe your argument that they've lost their mojo without Jobs is correct. The other alternatives though are that Apple is working on it and it isn't ready yet, or that you're wrong that the product category could ever become mainstream.