I wonder, why Apple has nothing like Samsung DEX. But also I wonder why Samsung and Google don't push this feature not more. I almost bought one of the last Win

I wonder, why Apple has nothing like Samsung DEX. But also I wonder why Samsung and Google don't push this feature not more. I almost bought one of the last Windows phone, the HP Z3, because it could be use as base for a small notebook (they had just a "dumb" notebook for it, just the screen and a keyboard, all the processing was over air or cable from the phone). Even the new Linux phone (Librem 5) comes with a feature to connect the phone to a monitor and keyboard etc. Apple has never showed any of this concepts even a tiny bit.