The 12.9-inch iPad Pro has been the perfect laptop replacement for my (largely) tech-illiterate boomer parents. In their two-plus years of ownership, I've fielded less than five tech support phone calls. Even then only one was an actual problem that a reset promptly solved, the rest were more questions about functionality.
When people ask why Apple is so slow to expand the iPad’s capabilities so that it can ultimately be their only device, I’d say it’s probably because for the people for whom Apple expects the iPad to be their only device (such as your parents), it's already more than capable enough. That’s why the iPad’s evolution has been more about refinement than expansion (though it has had a couple spurts of expansion).
For those who need a device more focused on the functionality side of the functionality-simplicity spectrum, Apple’s answer continues to be the Mac. It has a functionality-focused OS, and Apple believes that for heavy functionality, mouse+keyboard is generally the more effective input.
People should keep in mind three things:
1. Robust functionality and simplicity/ease are on opposite ends of a spectrum. There is no one device that can do both perfectly. And how much compromise one believes is worth it, is subjective.
2. No matter how much Mac functionality Apple adds to the iPad, or iPad functionality/ease to the Mac, unless Apple makes them exactly 1:1 (which I don’t think is even truly possible otherwise they’d be the exact same device), there is
always going to be a fringe group that is caught on the line, wanting just one or two more features from the other device in order to have all their needs (and wants) met from one device.
3. The market has ultimate say. Apple has thus far made their views on these matters pretty clear by their choices, but of course if a large enough market demands something contrary, Apple would have to respond, as was the case with large phones. That’s why I think frustration with Apple or any company in a free market is misplaced (unless they’re lying or doing something illegal). They are who they are, it’s the market that chooses what succeeds. Blame your family/friends/colleagues, or even
yourself. ?