Sure. 27" is just too big to be practical for most.
What I was specifically saying is that people here keep calling 5"-6" phones "too big" yet the mass market keeps buying them, in huge numbers. I'm not sure if you can walk into an Apple Store and pick up an iPhone 6 Plus off the shelf yet or if they're still sold out.
Aren't we getting to the point where you don't have a choice, if you want a new phone? The market wants phones, not necessarily with a strong preference for the sizes being offered. I recently bought a new phone, and found my options getting quite limited if I wanted less than 5" screen size, and SD card. If I compromised on SD card, maybe there's more options, but all the main choices seem bigger in general.
There was a point where the market had a choice, much like when phones still came with physical keyboard. There was a long period where you could buy a phone with a keyboard and a phone without. People bought the phones without keyboard. There was a time when you could buy the phones with 3" screens, and people bought the 4". Then when 5" screens came along, people bought those. Then the 5"+ screens.
The people who want physical keyboards, SD cards, smaller screens, and removable batteries are not numerous enough to sell $600-$700 phones to, not with competitive specs. I live in the US and I would love a mid-size diesel truck-based SUV. Toyota even makes the 4Runner that meets those exact requirements, sold overseas. But I am massively in the minority in the US, so I Toyota won't sell me one.
It sucks, it does. But much like we don't say we have a "big screen" or "flat panel" TV anymore (now it's just a TV), a phone the same size as the iPhone, the Galaxy, the Moto X, the One M8, etc isn't really a big phone anymore. It's just a phone.
Agree, there's no choice. Everything you find today below 5" is budget phones that are so slow and have such a bad screen that they could almost make you vomit. It can't be impossible to make smaller phones fast and with high dpi, a few years ago all phones were like that, take iphone 4-5s, nexus 4 or htc 1S as example. I've been thinking it's better to buy a high end old phone than a small new one because there simply aren't any high end small phones to buy. And by small i don't even require super super tiny, just finding something slightly below 5" is very hard.
Surely you agree there is an upper bound, though?