However, my perspective is that Chromebooks are meant to be used with a connection to the internet, which makes the 3G model sort of mandatory (for 3G/LTE access is more accessible - in my experience - in developing countries than full internet connections). It's in that perspective that I hold this argument.
For the case I'm basing this opinion on, a basic internet connection (DSL) in Vietnam costs much more money than a basic 3G/LTE internet connection. Also, a DSL connection will only be usable from home. I know this DSL/3G relation is also the case in other developing countries.