Well their current goal is netbook users, note the net part
there definitely is a business in it for users who spend a lot of time traveling - and theres always a way to find free internet. What do these users want? A fast boot for checking things in a short layover, and a way to surf the web, check email, and maybe type/edit some documents.
What does google apps offer? mail, document writer, spreadsheets, presentations... just bout everything they might be able to use in a quick fix.
I might be tempted to get a netbook with chrome os depending on how it works, it might be handy to have around as i travel a lot and spend a lot of time in classrooms where i could use the portability and just the ability of some easy document writing.