Just because you can replace an OS does not mean it's open. It's about the ecosystem too. How much percentage of Chromebooks could be running Crouton or Linux? I wager less than 2%.
And how many Windows users installed Linux? If it's easier to run Linux or use Crouton on a Chromebook, then that's an argument against the view that they're less open than Windows or iOS.
You're wrong. 100% of Chromebooks are running Linux. If you don't want to use Crouton you can bootstrap Linuxbrew and have access to pretty much any program you'd have on any other Linux distribution.
not just Linux, but Gentoo Linux. the one everyone used to make fun of[1] before Google made it acceptable, and the only one not going the systemd route.
