Yeah, I believe th stock, especially considering that despite what I've mentioned Apple does continue to perform. None of what you say here is wrong.
I'm just explaining WHY investors aren't valuing the stock higher, closer to what current performance should indicate it.
No company, regardless of how diversified is immune from changing markets, shifting priorities, or poor management. Many companies have fallen who are better diversified, and many companies who are top fo their industry have also failed.
However, looking at yesterday's numbers, Apple has done a pretty decent job at getting their services revenues up, which should help future valuation. The question will still remain is how dependant on those services are iPhone sales? Interesting note was that despite no significant increase in volume (41.3m vs 41m), revenues on both iPhone (as i predicted due to increased prices) and Services did grow.
Good conversation.
Regarding the slowdown in iPhone unit growth. Much of the slowdown is due (IMO) to longer upgrade cycles and smartphone market maturity. People are just holding onto their phones longer because they still do what they need them to do.
Back when the US market decided to go away from the subsidy (new every 2) plan, I imagined that Apple would be relatively immune to any damages from that shift. I surmised that people would likely hold onto their phones longer, but they would also likely buy higher end models. The thinking went like this.
Under the subsidy plan, you could get a base storage iPhone flagship for $200. Or for $100, you'd get last year's flagship at the base storage. Or for "free", you'd get the 2 year old flagship. Or you could bump up storage for $100 more.
To me, I felt that people would likely stick to the base storage phones because the jump to the next model or tier was $100, or 50% more money.
Under the current plan, you walk in and buy a base flagship for $650. Or for $100 more, you'd upgrade the storage. That's only 15% more. Or for 30%, you could upgrade to plus with more storage. The psychological hit is smaller.
Conversely, you'd only save 15% by getting last year's model. Not that big a savings.
To me, this was key in Apple increasing ASP and driving people to higher end models to offset the longer upgrade durations.
Plus Apple has been great at keeping people in the ecosystem once they're in. They've added the AW, iMessages, and AirPods to give that experience that you don't get under Android. Keeps people in the flock.
Eventually, Apple will have to provide more than just the iPhone. They've been able to skate to where the puck will be in the past, so there's no reason they can't continue to do that in the future.
disclosure - I long on AAPL and I'm a huge fanboy.