You see, I really liked running Ubuntu on my Cr-48. It pretty well convinced me to get the 4G iPad, just so I could have mobile data on my macbook. So I now carry a 4g iPad and 15" rMBP and gave the Cr-48 to my daughter.
Yesterday, my son dislocated (subluxed?) the Cr-48's screen hinge. Apparently the hinge mounting screws inside the case had worked themselves a bit loose and his action hyperextended the joint so far the plastic pieces of hinge interfered with each other so it wouldn't close. And the hinge was obviously loose. My daughter was hysterical until I took it apart (took about 2 minutes from incident to repair). During those two minutes, I seriously thought about getting another one. Because she loves it sooo much.
So, at least in terms of cheap, energy-efficient, light, mobile laptop, I think there's a market. ChromeOS, I don't know. I'm in the military, so a network-dependent OS is a non-starter for me.
For Christmas, I'm not sure I'm getting the kids any electronics. I'm tempted to get them iPad minis but I don't see them using tablets for anything productive, so an ultrabook makes more sense. But I see no reason to a) buy a laptop for a 7- and 10 year old kids, or b) buy a Chromebook, even at the price, if I'm only going to convert it to Ubuntu. In part because switching the BiOS is one headache more than I care to endure. In part because imposing an unsupported operating system on someone else just seems rude.
In the case of the Asus C7: no way am I buying any more spinning rust hard drives.