For speculation on why they might want this, some folks think Google’s next flagship Chrome OS device might host VMs. There are other public Chrome commits related to virtualization recently: one says, “Stop disabling VM extensions on Eve. VMs will be used to host containers soon.” And Eve is suspected to be the “Pixelbook” Google’s announcing on October 4. Oddly for a Chromebook, is supposed to be available with gobs of Flash (512GB).
They could just use virtualization as a more secure sandbox for Android apps than they have now. Or they could go big and let you run Windows or Ubuntu in VMs, which would explain offering configurations with gobs of SSD space.
There’s not too much point to speculating, since we’re going to find out the 4th anyway, but why not?