Samsung DEX isn't far off from this, it's just that you're limited to Android instead of Linux, MacOS etc.

But Apple will surely never allow such a thing since their main interest is in selling as many pieces of hardware to each of the Apple Faithful as possible. So they with a straight face suggest that a single human needs an iPad Pro (which easily tops $1500 with the eye-wateringly-expensive keyboard and a storage upgrade) and a laptop. Nevermind that they may have the same chip inside.

I own too many Apple devices, so I may unintentionally qualify as one of those Apple Faithful, but even so I can't really find a place for the iPad in my life. I've tried, I do own an old iPad Pro, but it is semi-permanently mounted to my treadmill as the only use case I've ever had that sticks. As a practical matter I either want my phone, or a real desktop computer.

Something like that Samsung DEX with a real Linux OS and maybe I'm getting a new phone.

>"Samsung DEX isn't far off from this"

I have the latest and greatest and can attest that the experience is atrocious