Why are google brands[0] featured so prominently on Microsoft's phone. Is it a requirement for phone Android phone vendors to keep google on the homescreen? [0

Why are google brands[0] featured so prominently on Microsoft's phone. Is it a requirement for phone Android phone vendors to keep google on the homescreen? [0]https://www.microsoft.com/en-us/surface/devices/surface-duo?activetab=overview https://www.microsoft.com/en-us/surface/devices/surface-duo?...