Is it a rule imposed by the phone carriers, who want you to buy a different plan with no voice service if you have a tablet? It can’t be the phone makers since the are so many. It can’t be Android software licenses since Apple seems affected too. I’d be pretty interested in a tablet sized phone. But they seem to have maxed out in the current tall skinny format that is not really big enough for some things. Just wondering.
Edit: aha, I managed to get rid of the stupid photo. Thanks for the help.
My guess is people weren’t buying large phones anymore. Those that want them are getting foldables. That being said you could get the Galaxy Tab A7, I think there is a version with a 4g modem. Also there are iPad mini models with 5g iirc.