You’ll be waiting awhile. iPads have had desktop M-series CPUs for ages now, and you still can’t run macOS on an iPad.

It’s just a software restriction. I’m sure they have macOS running on iPhones and iPads internally, probably both through a VM and natively. But it’s very Apple to block this use case.

I’m pretty sure the efficiency cores in the A20 Pro have more juice than the performance cores in my M1 Pro laptop.