Engineering focus (if in addition to smaller phone)
That's a very good point.
When you look at Samsung, you see the Galaxy S 3 and Galaxy S 3 Mini, the Galaxy S 4 and Galaxy S 4 Mini.
Both Mini-models are actually big, in comparison to the iPhone (S 3 Mini in comparison to the iPhone 4S).
Both are also not even remotely similar on specs to the non-Mini models, with low resolution screens, just a small margin of the performance and both are aimed at the 300-400 price range, while the original models were sold for 550 and higher.
There's no way Apple will replace the 4" screen with a rumored 5.7" screen for the original iPhone, so it's more likely that - if that will ever happen - we will see an additional iPhone, an iPhone Maxi if you would like to call it that way.
But what specs will it have in comparison to the regular iPhone?
Will it be better, an iPhone Pro?
Will it have the same performance? What's the benefit of having an iPhone Maxi then? Just the larger screen?
What would its price be?
People think "Bigger = Better = More expensive" - but it's actually the other way round, cramming the same hardware into a smaller case is more expensive, so selling it for less would like very strange, selling it for more would have a much higher margin than the regular iPhone.
Selling it for less would actually be reasonable, because IF it would be an answer to the threat that are bigger Android devices - those who buy Android
are statistically earning less than the average iPhone owner.
If you target Android buyers with a bigger phone, you also need to sell it for a lower price.
Why are you stating "the fact that people would buy something doesn't mean that Apple should sell it"? Only Apple can say that referring to a 5" phone. In fact, Apple should sell any product it sees as successful on the market.
We are talking about an increase in screen size which at the very maximum could be 1 inch. I have never stated anything about what you just wrote.
Also, what do you mean by "Homogeneity of the platform" and "Engineering focus"?
1. No, Apple should NOT sell anything that would sell (well).
The awesome thing about Apple is, that you can point someone to Apple.com and tell him to buy the MacBook Air.
There are four models and they are clearly discernible from screen size and storage capacity.
Two 11" models, one with 128GB SSD, the other one with 256GB SSD and two 13" models, again with the same storage options.
Click on SELECT and you'll find the option to increase the CPU-speed or RAM size, with both options available on ALL of the models - and both upgrades are usually not exactly necessary for an average user.
The 256GB models also have the option to increase the size of the SSD to 512GB, but that too, is something that the average user doesn't need to upgrade.
Four options and a few possible upgrades, that aren't necessary for an average user.
Try the same with Hewlett Packard...
Too bad they stopped selling Netbooks, getting to understand the countless different options available when selecting a Netbook was the best example on how not to do it.
They got Ultrabooks, Chromebooks, WTF is the difference between the ENVY and the Pavilion line (there are Pavilion Chromebooks, but ignoring them, at first i thought Pavilion might be the line of Notebooks sporting AMD CPUs - but i was wrong, there are also ones with Intel CPUs.
Why buy the Essential Home laptop with an Intel processor (the other one with an AMD E1-1500 is not much more than an oversized netbook) and not the HP Pavilion 15z-e000? They cost almost the same, have similar specs but are in completely different categories.
What i tried to show here: Don't sell something just because!
Apple is the one great company with someone who is able to say "No" at the top, that is a very important trait.
Without it, you would be developing the next Microsoft Kin and would make your potential customers scratch their heads in your online store, because they wouldn't have the slightest idea which device to buy.
2. A 5 inch iPhone? Too bad, that won't be released before 2014 and Samsung has never stopped increasing the size of their phones, the Galaxy S 5 will probably have a 5.2 or 5.3" screen.
The iPhone Maxi will look small in comparison and all those bitching about the 4" iPhone screen will bitch about the "small" 5" iPhone screen.
3. Engineering focus is what is described in my answer to BaldiMacs quote.
Well, it's a bit more, its also how to engineer two devices at the same time, will they share components, will one model re-use last year's components from the other model?
Which iPad is the "hero" - the iPad or the iPad Mini? What will happen if more people buy the Mini instead of the regular sized one - will they switch focus?