They grew $14B in revenue in 4 years?
Where did that "extra" market come from. $14B is no joke, and in 2014 iphones were pretty much established market,
You are only measuring Apple on the money scale. No one is worried about Apple stock losing value (at least not currently).
Apple can quit the Mac market, turn into a media and subscription service, and rake in a lot more money. When people say Apple is doomed, they mean as they know it. As the personal creative computer maker that makes hardware and software that just works.
Just to demonstrate this, a lot of Pro's are opting for the PC hardware and Apple alternative software. iMovie no longer best in class, I hear many people quit on Final Cut, many complain about iTunes, people unhappy with Mac Mini, Mac Pros, and arguably the MacBook Pros. This is just to demonstrate some of what people mean when they say Apple is doomed. Its not about money and profit.
Not necessarily, Its like saying if you don't like Verizon you can go to AT&T. If you only have 2 options... do you really have options?
You can only have soft drink or water, Honda or Toyota, CNN or Fox... I hope you get the idea.