Horace Dediu, on www.asymco.com:
And so I’m writing this post on a Mac. The graph you see above was created on the Mac. It’s possible to do all this my iPad and even on my iPhone but it would be harder. But I’m also willing to bet you’re reading this on a phone.
And that’s the crux of it. The PC is still the machine of choice for authoring while the device is the machine of choice for consuming and consuming will always be more popular. What the iPad has done is taken a share of PC use and in my case I do use it for some tasks like email a lot more frequently. The theory would suggest that the iPad will continue its upward trajectory while the PC would abandon the low end.
I subscribe to this reality. While I rather take my MacBook over my iPhone or iPad if taken to a deserted island, my wife has switched most of her work to an 2018 iPad Pro with Brydge keyboard. It was initially out of necessity — her MacBook Pro was in Costa Rica while we were in the US — but it was enough to change her workflow.
The M1 Macs have push out/up that tipping point for me, but overall the bar has been raised, and that’s a great thing.