Didn't they just announce a program where they won't let you install any additional apps that aren't certified by their developer program?
Who on Earth is going to buy an Android computer where you can't deploy/develop applications unless it's either an app built by a certified developer or the user of the device becomes a certified developer.
I can tell you from personal experience there are still times where you have to run an unsigned application even in a closed IT space like the use case of Chromebooks.
No unsigned apps is gonna be a really hard sell, even Mac OS computers aren't that locked down.