The iPad and iPhone lineups are exactly as you describe: oodles of minor internal variations on a theme rather than distinct forms and functions. They don't need to sell three different kinds each of iPhone 14, 15, and 16 all at the same time; they DO need small, medium, and large phones in the lineup. With the iPad, just make the basic model good enough for pros and amateurs alike and do it in mini, standard, and large sizes; don't try to hit every price point with near-identical products and maximize market saturation. The philosophy is completely different.
But that’s how the Mac has been for decades.
In fact, going back to my 2009 example, there was a 13 inch MacBook, a 13 inch MacBook Air and a 13 inch MacBook Pro. It was literally the same as it is today with the 11 inch iPads, down to the names. Regular, air and pro.
I get what you are going for, but I don’t think it would work as easily as you think.
We have had smaller iPhones, they don’t sell.
We have a small iPad.
The reason that 6.1 inch phones and around 11 inch tablets are so abundant is because that is the screen size is the default screen size that sells, just like laptops right around 13 inches.
This idea also completely ignores different price brackets.
You said that they should make the iPad good enough that there’s just one in different sizes, but that ignores the fact that what people consider good enough for “Pros” would have to have a starting price somewhere around $800-$1000.
The iPad currently starts at $350 and is massive in education where they buy them in bulk for $299 each.
Try telling these institutions that they’re only option for a full-size tablet from Apple is $1000, they will just go elsewhere, and Apple will lose an entire market.
The idea of a lineup that just has one MacBook, one iPad, one iPhone sounds great in theory, but if you actually sit down and try to figure out how to do that without just discontinuing all of the affordable models you quickly realize that it really isn’t possible.
If there were one iPhone, that was just everything you wanted, it would be over $1000.
One iPad and three different sizes that just had everything you wanted, $1000
One MacBook in several different sizes that just had the exact same specifications and whatever you wanted, thousands of dollars.
Lastly, there’s the fact that you could never guarantee that the smaller devices would cost less, as miniaturization almost always costs more.
That’s why whenever people suggest something like an iPad mini pro, and they are under the assumption that it would cost less than the current iPad Pro, it’s more than likely they couldn’t be further from the truth.