We switch in apps (ie in netflix). This whole "one person one device" just makes the iPad a shallow consumption device and keeps the laptops for work (and also often for streaming because of this. Btw they are all 2nd hand business laptops running Linux; for the Kids Gnome is very iPad/ChromeOS like and familiar).
It would be so much more useful a device, and maybe we'd even then start buying more, if we could just switch user profiles.
Oh, because it's just a consumption device when we "needed" another one, we got a Xiaomi. Who cares about al the niceties of the iPad anyway when all it does is show video.