There is gap there between by "volume sold" 'most' and by "systems offered" 'most' .
The new Chromebook Plus initiative is indictive that space is not completely about a 'race to the bottom' overall system price.
Also it is a criteria some organizations are looking for. For example:
" ... and passes MIL-STD 810H tests for reliable longevity ..."
Find the best deals on Chromebooks here. Free shipping on Chromebook orders over $99 in the continental USA.
ctl.net
and
" ... Acer Spin 714 ...
... . It's also remarkably tough. It's
MIL-SPEC Standard 810G tested, which means it can handle drops and other physical shocks. If you need to take a computer to a building site, this is the one I'd take. ... "
Chromebooks offer fantastic features, such as touchscreens, fast processors, and decent storage, allowing you all the tools you need to knock out your work. Plus, you'll have some fun doing so.
www.zdnet.com
(the Spin 714 lands in this around $700 range that Apple looks to be dipping their toe into. )
and
" ... To make the keyboard more durable — and resistant to small exploring fingers! — the gap between the edges of the keycaps and the keyboard surround is reduced to prevent anyone from prying the keys out. ...
...
( in the tech specs tab on that website )
... US MIL-STD 810G military-grade standard ...
"
With over 10 hours battery life and an ultra-thin and light design, ASUS Chromebooks give you all-day freedom â these ASUS laptops are always ready to go at any time, wherever you are!
www.asus.com
Is it a requirement for all Chromebooks? No. Are more than a few of them trying to get there? Yes. There are a wide variety offerings that are not all primarily clustered in the sub $280 range. there is a better 'balance' at this point with vendors releasing sytsems into a wider price range. ( so not quite so much 'crabs in a barrel' trying to claw the others back to the bottom contest. )
The "Intel N100" generation of SoC is better than some of the increasing older SoC in some of the examples above. The trickle-down from Intel's 'E-core' work into more affordable SoCs has been kind of slow to get traction in Chromebooks. Probably a bit of a catch-22 . if they sold more then probably more effort put into pushing in uplift quicker.