There won't be that much saving due to the lack of scale. The mentality of (normal, well adjusted) people around me is to dismiss laptop entirely as a personal computing device, they have their phones and tablets that are far easier to use. For them to get a laptop would imply they're forced to, because there are Windows apps unavailable for Android/iOS. A cheap Arm notebook is useless for them (unless Microsoft somehow decide to work with Mediatek and the rest for cheap WoA devices). Chromebook never gained popularity in my country with lack of reliable and affordable internet access so the realistic OS would be either one of those Linux distro that support ARM (but in turn, most people don't care about Linux), or Android, in which case it's still far more natural to just get a tablet with a keyboard attachment because Android desktop experience and the apps ecosystem aren't there yet.