How so? You can not profitable sell an Android phone without the closed sourced Google Play Services in any country outside of China any more than you can sell a phone running Darwin.
As you said, they can sell without Google for China and technically it's possible on other market (see Amazon Fire, Meta Quest) and widely used for embeddeds, thanks to open core OS. AppleOS device is by 3rd party strictly impossible.
Yes if you have the resources of a company worth over 1 trillion dollars you too can take advantage of the crumbs bestowed on you by Google to make a successful platform in the West…
You can see other non big tech examples like DJI controller, and don't miss embeddeds like credit card terminal. Anyway no 3rd party can make AppleOS device, period.