I'm not sure if the licensing of Google apps is still accurate, but this clearly points out that those apps are optional.
"Lockheimer clarifies that Android more broadly will remain free and open source. These changes only affect the Google products that are traditionally bundled with the OS. If companies don’t want to pay,
they can still ship a device without any of Google’s apps and services, as Amazon has long done and as already happens in China, where Google doesn’t operate. "
https://www.theverge.com/2018/10/16/17984074/google-eu-android-licensing-bundle-chrome-search