The market for chromebooks are for people who just want something to get on the internet for email, web browsing, youtube. And to some extent students since they finally put in a limited (but still useful) version of gdocs that you can use offline.
I've used my chromebook when it was offline for awhile in college, works quite well for basic note taking.
The other big draw to people who aren't computer geeks is no bloatware, quick bootups, maintenance free.
With me I wanted a lapotp to take notes on with good battery life, full size keyboard, SSD, still reasonably fast while using encryption. A samsung chromebook did all that for $250, where as a normal laptop to match that would have set me back closer to $400 to match it in the performance/battery life department at the very least.