https://support.google.com/chrome/a/answer/6220366?hl=en
If Google can do this for Chromebooks, most of which aren't even designed by Google (although usually based off reference designs), clearly they can also do this for the actual phones they make and sell under the Pixel brand. And Chromebooks span quite a wide variety of hardware capabilities, from school-targeted low cost models with eMMC and <4GB RAM all the way up to devices with NVMe and gobs of RAM on cutting edge CPUs from a variety of manufacturers, both ARM and x86.