I agree is that it is indeed a software limitation. The latest generations of iPad Pros are beasts hardware-wise as they are.
I have been saying this for at least a couple of years: if Apple gave us an "iOS Pro" with the following 3 features, the iPad Pro could truly become a laptop replacement with hardly any compromise:
That would make the iPad Pro the ultimate hybrid device for every household, every student, and even every office desk in the world.
- Fully fledged file management/navigation app.
- A bit more of flexibility to multi-tasking.
- Mouse/trackpad cursor compatibility.
Agreed. And such a device would kill the low end of the MacBook lineup. Which probably explains why they won't do it!