Odd question to me, trying to imagine a world where I would abandon one device (iPad) to work exclusively with another device type (laptop). Financially constrained? Some misguided vision of saving the planet (you could probably cut waste long term by other means)? Authoritarian dictatorship? In my mind while there is some overlap, the two devices have different uses they are optimized for. Content creation and content consumption.
Even when I travel by plane where light weight is a premium I carry BOTH a laptop (MBA 15) and an iPad Pro. When at a meeting or answering a lot of email, the MBA comes out. If I am just reading, browsing or watching movies the iPad comes out. And on occasion, the iPad doubles as a second screen for the MBA if I really want to put the windows users at the table to shame.
At home it is even worse (for those that think a person only needs one device). At home I have another computer (Mac Studio) for heavy lifting (video and photography hobby), and a second iPad (the iPad mini for reading in bed, the iPad Pro lives in the living room by the couch). And yes, I have the iPhone Pro Max 15, but that screen is great for quick answers off the internet or quick reads of short emails, but too small for protracted reading for me.
And thats my bare minimum set up. Two computers, two iPads, one iPhone Pro Max.
reality its more like three computers (I have a MBP 16 when I want to travel with max computing power) and a third iPad (Pro 12.9) when I want the largest screen experience.
But if I ever find myself in a regime that can dictate to me only one device? Going to have to stick with the laptop running MacOS. Not for the better keyboard (it is) or larger screen (it is), but oddly enough, because of the file management system. I have literally over a 100,000 documents on my computer and sorting through all those with iPadOS would be