That's the thing,I don't think it is an excuse they can make. The technology exist for them to be able to do it,but I only realised after looking at the BOM for phones,how little is spent on the camera modules,so my viewpoint is that they got a good deal on the 1/3" sensors(since other companies are now trying to go a bit bigger),so had to engineer a brighter lens to compensate for this otherwise they would be behind the competition.
They might argue,size,etc but competitors can still ship smallish phones without having to go backwards in sensor size.
The problem is smartphone sales are starting to slow down,with most of the growth happening in less mature markets(where feature phones are more common and people are more price conscious and China has been opened up a bit so Apple has taken advantage of that but now sales are dropping). The issue is if they go on like this,they will hit the same problem that hit compact cameras when they decided to stop innovating for a long period- people will just keep them longer and longer. It was the same issue then - many of the companies tried cost cutting by moving to smaller sensors,and they whacking up MP counts and we saw what happened there. By the time they stopped doing it was too late.
I am seeing the same mistakes being repeated here - have you not noticed some of the newer phones have lower MP counts,thats because they tried using MOAR MP as a marketing tool when image quality was getting poorer. They are trying to add pseudo zooms with dual lenses,and it was the same with compacts where they added longer and longer zooms,etc but if someone looks at the latest phone and it seems to be not massively better they will probably wait until another year,etc.
These companies need to get off their collective backsides and try and innovate as I fear a number of them might actually start to have problems with the phone parts of their companies a few years into the future at this rate,especially with the newer Chinese companies starting to flood the market.
They won't need to innovate - they will just try and offer what the more expensive companies are doing at a lower price.
You think OnePlus,Huawei and Lenovo are the only ones - China has loads more companies and they are starting to move outside their country.
Look at how Chinese designed SOCs are starting to gain traction.
Which a cheapo £100 phone will do,so in the end we agree the "high end" ones are just really crap for what they are??
But its contradicted by the fact all people go on is the IQ of their camera phone,and are willing to spend £100s more just for a £20 upgrade to the camera module.
The same people who utterly ignore cheapo phones since the phone is a status symbol and who would get laughed off any tech forum,if they actually suggested to play WoT they needed a £1000 Core i7 7900X at 1080p and dual Titan Xp cards.
Look at all the lenses,etc companies released for them too - so it seems to be some weird lot of people who want quality,but don't want quality,who want convenience and size but still want to carry around selfie sticks,gimbals,harnesses, phone grips,extension lenses,battery packs,etc which probably is less convenient than buying a proper camera and probably costs more.
Its almost like the constant 24/7 marketing seems to have an effect!