On the other hand a smartphone has pages long list if specs. And users have divergent preferences for those specs.
The market is only able to find a common denominator that makes everyone equally unhappy. In doing so it transfers power to the few manufacturers who now make choices for the users. Even worse, manufacturers copy each other and follow fashion trends.
It is almost impossible to find a phone that has a replaceable battery. It is very hard to find small phones. It is very hard to find phones with headphone jacks. It is very hard to find phones without a punchhole or notch for the camera.
These are all things people desire, but either not strong enough or not enough people or both.
I like the iPhone mini but not enough to sacrifice the flexibility of Android.
I like displays without cutouts, but not enough to sacrifice the 4 years of updates Samsung offers.
Etc. Etc. Etc.