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Timmy has all his eggs in one basket, and that's a basket that caters to a very fickle fashion sensitive market. And he's burning all of Apple's other perfectly good baskets.
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$300 Dell laptops have had Skylake for half a year. A $3000 top-end Mac laptop still does not. ...
...Now the Macs represent obsolete hardware at twice the price of something much more modern from any PC company. By the time Skylake macs comes out, it will be old news and the industry will be looking at Kaby Lake and Cannon Lake.
Being a mac user now means living in the past and paying a premium for the privilege. But that's okay because Timmy says you shouldn't even be buying a mac, the 9.7" tablet is all the average user needs. Despite the fact it's a dying market that really serves little purpose for most people.
You talk about dying markets, but completely ignore the fact that 2015 was notably the worst year for the PC market, with significant sales declines for all but one manufacturer. You talk about macs being uncompetitive and archaic, but ignore the fact that they were the one personal computer product that bucked the trend in 2015, posting an increase in product shipments while everyone else was in decline.
Anyone who buys a $300 Dell just to get a Skylake processor is still just getting a $300 Dell (dude, you're getting a Dell!), and it runs Windows. I'm guessing you are really a 'PC person' already, because you're all worked up about which computers have what processor, etc. PC enthusiasts make purchasing decisions that way, searching for whoever has cobbled together the latest bells and whistles, component-by-component. Those people have never been Apple's target customer.
Apple is quite often not the first to market with a given component, instead opting to more thoroughly and intentionally bring together updates in hardware and software to create a more stable and less confusing set of options for its customers. This infuriates 'PC people,' (and 'Android people'), but seems to have created a solid and growing satisfied customer base for Apple. Macs have always been more expensive than the competition, and PC people can't wrap their heads around that fact:
"but, but, it doesn't even have the new gonkulator 5000, and yet it costs more!" Meanwhile Apple customers look at it and say,
"does this computer do what I want intuitively and with stability?" The answer being "yes," they gladly pay the premium and buy it, and then use it happily for years without worrying about which gonkulator is under the hood. The result is that someone who bought a 2010 MacBook pro is still happily and smoothy running it on El Capitan, while the person who bought a PC at the same time with all the latest stuff under the hood is probably limping along on a five-and-a-half year-old PC, running Vista or Windows 7, and hobbled by regular crashes and mysterious bloatware in the background slowing everything down to a crawl. The truth is, PC customers are far more likely to be "living in the past" with a computing scenario just like that.
So by all means, go ahead and buy your $300 Skylake Dell and see how that works out for you in the long run. Meanwhile, Apple will continue to update Macs and OSX in an intentional way, and mysteriously, their customers will keep coming back, because their competition is not getting stronger in any particular way.
Of course iPhone is Apple's biggest product line, but it's not because they're ignoring macs or anything else. It's because they're producing the only significantly profitable smartphone on the market.