Apple have been through a success/decline cycle before. In the late 80s the "killer application" was DTP, initially in combination with Pagemaker which was rapidly overhauled by Quark. By the mid 90s a combination of pre-OSX instability and the introduction of Windows NT had Apple staggering. I was pretty surprised when the first iMacs started appearing. Same old cr@p OS in a nasty two-tone plastic box. But people bought them.
It still amazes me how much people are prepared to pay for these terrible value products. A greedy, rapacious business. The sooner the second decline begins the better.
I have used Macs back in the 90'ties and in the early 90'ties Mac OS was so much better than Windows, but after Microsoft got their act together with Windows NT4 I switched from the unstable Mac OS to Win NT4. When I started my photo workshops in 2008 I saw an occasional Mac blinking at me in the workshop groups. Now it is the opposite ... a lonely Windows laptop. Strangely enough whenever somebody comes with a Windows laptop then the fan is always making a lot of noise where the Macs for most part are quiet. Maybe an example of good design.
I changed to Mac OSX (again) in 2009 and I was able to replace both a desktop and a laptop with a single laptop that could also drive my 30" screen. I have not looked back since although the Windows laptops have gotten better and certainly can drive a big screen today. Now I have a MacBook Pro 15" retina with 1TB SSD. I'm not sure where I would find an equivalent laptop ... although I have not searched either. Last time a looked a couple of years back there were no other choices for an equivalent machine for less money and I would have to put up with ugly Intel Inside stickers and generally unelegant design. I'm happily paying extra, if at all, for the elegance of the MacBook's of today. However Apple is not in the low end market for either MacBooks, phones, tablets or desktop Mac's.
However if Apple falls back to deliver bad products as in the mid 90'ies and forward when they were almost bankrupt then they will fall again. For now I'm a happy iUser but will change anytime if the products are no longer competitive. They same goes for cameras. The only alternative for me to Canon is Nikon which I also shoot but don't like much except for the sensor (D800E). The Sony A7R looks perhaps interesting but for me it is a half baked product at the moment. The arrogance that Sony shows to the many reports on shutter shake on the A7R also makes me wonder what they are smoking. The way Sony changes strategy constantly is not good either. I'm not here to defend Canon or Nikon, but honestly I don't find the fuss over a mirrorbox really worth discussing that much as long as there are no other real advantages. As long as lenses have the size and weight for a given aperture there is not that much to gain. A break through in lens design that would lower the weight and size without changing the max aperture would make me really interested going with a leigther camera body. Yes, the lenses that Sony has released are lighter but they are also for the zoom lenses f/4 so don't compare them with the heavy f/2.8 lenses in the bag at the moment.
Canon and Nikon will no doubt come with a new camera one day that does not have a mirrorbox when they have made an autofocus system that is consistently better than the phase detection system used today. It's not a matter of innovation or protecting their base, it is as simple as delivering a product that is better than what they produce today.
To a large degree I'm with Michael about what he said in the article. I have in my past IT career similar experience from being close to product management and marketing functions in a large IT company. What I fail to understand (maybe!) is why the camera companies don't utilizes the fact that there is a relatively powerful computer in each camera to automate more functions that we now do manually. There are lots of them. But as long as professionals love to distinguish themselves from amateurs by doing everything fully manually I don't think the camera companies who listen to them will make more things automated. For me composing and shooting pictures and not being distracted by unneeded technical matters when shooting is an absolute nirvana which I don't think will happen any day soon. Sigh!