Dr Seuss wrote a book using only 50 words, which went on to sell millions[1]. A great artist can produce great work without being constrained by the medium. That does not mean the medium can/should not be improved further.

That said, depending on the majority use cases, the iPhone 8 camera is plenty.

[1] https://en.wikipedia.org/wiki/Green_Eggs_and_Ham

With professional lighting. Vastly reduces the difference between a large sensor on a pro camera and the small ones in phones.

I'm no Soderbergh. He could probably shoot an Oscar winning feature a ten year old Flip camera.

I get what you are saying though. I kind of wish Google or Apple would license their tech to one of the companies still building large-sensor cameras (Canon, Nikon, Fuji, etc...) to see what could be done with even more data.