For repurposing iPads to smart-home-ish devices I think that's a great idea. But for secondary displays? I'd not go there. My wife used her iPad Pro relentless

For repurposing iPads to smart-home-ish devices I think that's a great idea. But for secondary displays? I'd not go there. My wife used her iPad Pro relentlessly, for anywhere from 3 to 12 hours a day, for 5 years, and it finally died a few months ago. Now imagine you have your iPad's screen always on while your computer is on -- which is at least 6h a day all the way to 18h. How long will these devices last like this? My number #1 question however would be: how far in the past would this go? I imagine a lot of people have iPads lying around and they use them no more than 2h a day for some videos or music. This initiative could definitely breathe new life in them and help people get the maximum of their money's worth.