You can't possibly think that. You'd seriously like to carry around a bag of gadgets instead of one that does all well??? You do know your iPhone killed off the iPod right? Do you love spending 1k+ for an iPad and another 1K+ on a laptop? If so, you are the consumer Timmy loves. The rest of us would welcome one device.
Interjecting…
TLDR:
Of course in a dream world, everyone would love one device to do everything. But in the real world, there are always varying degrees of trade offs, so it’s not always ideal to combine things. That’s why even though there is a multitool like a Leatherman, there are still dedicated tools as well because they do their specific jobs better. And there are many people who prefer these dedicated tools. So a company that only sells dedicated tools is not (necessarily) just a greedy money-grabbing company if the dedicated tools legitimately do their job better, and people prefer them.
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So the question is, do the Mac and iPad do their respective jobs better as separate devices? And what would be sacrificed in combining them?
(I’m sure there are relevant technical aspects that are beyond me, but I’ll just speak to what I think is evident.)
First, let me address your mention of Apple combining the phone and iPod Touch (PAS camera, too). I think Apple believed those made a lot of sense to combine because they could all use the exact same form factor of a small handheld slab with a display (no physical transformation needed), and just exist as siloed apps on the same software platform (no rebooting). And the trade offs were extremely minimal—basically just using a touch UI instead of physical buttons (at least, I see that as a trade off), one or two more taps/swipes to get to the app, and (acceptable) hit on battery life. That’s all.
But with the Macbook and iPad, it’s not the same match made in heaven. Sure, the smallest Macbook and largest iPad have similar size screens (and now use the same chip), but there are some significant incompatible traits.
One has a permanently attached keyboard which allows for a bottom-heavy base and thin light display. It’s an overall thicker device with internals separated from the screen allowing for more thermal capacity, which allows for higher performance. It has a UI with tiny targets to have as many targets simultaneously on screen as possible. And it has an inherently more flexible OS. All of this optimizing it for productivity.
The other has a thin slate form factor for portability, and large targets for easy/fun touch input. Its OS is inherently less flexible/simplified for ease of use, security, and zippy performance. All of this optimizing it for basically everything the Mac isn’t optimized for (especially true for the smaller iPads).
Combining them into one device with one OS would necessarily mean sacrifices in these conflicting traits. These sacrifices are more significant than those made in the case of the iPhone.
There are proposed workarounds to avoid some of these sacrifices, the popular one being dual booting. But that sacrifices a smooth continuous experience since you would have to stop everything you’re doing, and restart your device each time. And two OSes would take up double resources like storage and maybe RAM. And not sure how memory swap would work. I suspect there might be other sacrifices that I’m not techie enough to know. In any case, these quirks make dual booting seem far from being in line with the Apple’s ideal UX.
Sure, these may be sacrifices that some are more than willing to make. But how big of a market that is is not clear. Microsoft has been chasing this all-in-one with their Surface Pro for a long time, and after many years of refining, has still only ever had modest success in sales and customer satisfaction. But regardless, the fact remains that there is at least some legitimate reason to keep the devices separate. This doesn’t prove Apple‘s innocent, but it does prove the possibility for it, at least in this case.
Of course, the elephant in the room is the fact that Apple has already done some combining of the devices—starting with the Smart Keyboard. I think Apple saw the physical keyboard as a necessary option to offer, because only having a virtual keyboard made the iPad too limited for even basic productivity to the vast majority. Then due to ergonomics, they had to offer a trackpad as well in the form of the Magic Keyboard. But this resulted in trade offs. The MK is quite heavy, and it’s an extra device to keep track of—negating the iPad’s portability. And it’s still top heavier with the iPad attached.
So Apple is definitely guilty of sending mixed messages with the trade offs they’ve already made. But even so, we can follow lines of logic to see how the iPad got to where it is now. And while the iPad will surely continue to improve, logic doesn’t necessarily dictate that it should converge with the Macbook.