I don't know for Microsoft but xiaomi has been saying this https://www.androidauthority.com/xiaomi-ads-business-966584/ https://www.androidauthority.com/xiaomi

I don't know for Microsoft but xiaomi has been saying this https://www.androidauthority.com/xiaomi-ads-business-966584/ https://www.androidauthority.com/xiaomi-ads-business-966584/ >This advertisement business is what allows Xiaomi to subsidize and offset the cost of the hardware and reach those astonishingly low price points. So it wont be surprising if Microsoft says the same