That’s the same logic that led to the Windows 8 UI being designed tablet first because that’s “where we’re all going”. Fast forward to Windows 10 where MS had to concede that, no, turns out it isn’t where we’re all going and rolled most of it back.
A lot of us felt at the time that surely laptops and tablets would converge. Otherwise, what a waste of hardware.
But it hasn't really happened. From a hardware perspective, things have gotten closer with the iPad's magnetic keyboard. But, I still find that the iPad as laptop replacement to be a compromise that I may tolerate for travel but don't love for a lot of laptop work.
That's a gigantic market segment, and Apple has to be very careful to not make those devices complicated or vulnerable.
Not sure I'll buy another iPad given my current lifestyle.