I tried going all iPad and my husband opted for iPad Pro as personal computer - it is woefully underutilized.
"And that's not just me"
First thing productivity users do to a Win or Mac laptop is install a windows manager so they don't drag windows around.
iPad Pro in its landscape dock provides split screen with adjustable ratio, as well as left and right floats, along with swipe between desktops, as well as push to view and pick a diff app. One app wide, one app narrow, tends to put the narrow app in iPhone UI, which is pretty ideal, better than desktop where windows refuse to get narrow.
You can drive iPad with a magic touch pad beautifully. I suspect this workflow management is behind some of the gesture convergence in Ventura and iOS 16.
Interesting point of view, but I must either live in a parallel universe or know no "productivity users" (whatever that is supposed to mean) then. Windows' window management features cut it for 99.9% of Windows users, and the rest use PowerToys Fancy Zones or something of that sort.
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I generally put terminals and my note taking app towards the left (smaller windows), my IDEs in the middle (enough for split pane editing when needed), and my browsers on the right, where they are in square / portrait aspect ratio more suited to reading.Well... OK. I'm clearly not a "productivity user".
I'll prefer better optimized workflows on my phone and flexibility and speed of a full sized keyboard with a mouse. Every few years I fall into this "this looks cool, lets try" iPad thing - to only go back to a mouse.