Ummm... 50% of iPhone users would probably like their "laptop" in their pocket. Connect to a screen and it goes into laptop mode. Mouse/Keyboard are wireless of course, as they are now. The phone is powerful enough for MacOS. Hell, it can go into "game console mode / Apple TV Mode / Whatever."
I was dumbfounded that they weren't bright enough in Apple engineering to actually power off the screen with it goes into DisplayPort mode in iPhone 15 Pro when it came out. Like, are you guys dense and just want to overheat the damn phone and use twice the power? It would be a perfect game console for home TVs that way... quick and easy. But the product designers are blind.
Apple can't get out of their own way with obvious features.