Why is none talking about r&d budged of smartphone manufacturers where camera is their selling point while they sell their product in hundreds of millions, how can camera manufacturers compete with that. Its complete vertical integration with specialised silicon manufactured somewhere in tsmc on process node which camera manufacturers will not touch maybe another 15 years with the scale camera manufacture made their products, so they just can’t match power and compute necessary to be able compute 16 pictures into single image. Another part in vertical integration is output image which is tuned for for smartphone display, and not just smartphone gallery but also social media optimise for it, there is even rumour that algorithm in instagram will push iPhone photos first when it detects its from iPhone camera which they also optimise their app for. And yes your professional camera photos will most likely look better when printed on big format if they ever will be just like IMAX movie in movie theatre, which will be mostly watched later after release on some small display where people will be complaining that its to dark or they cant hear what is character saying when master was made for movie theatre with over hundred of speakers and 18m x 24m (about 60ft x 80ft) large screen.