`gcloud services list --available` returns not only the enabled services in the project but also services that CAN be enabled.
https://cloud.google.com/sdk/gcloud/reference/services/list#--available
Run the following command to list the enabled APIs and services in your current project:
gcloud services list
whereas, Run the following command to list the APIs and services available to you in your current project:
gcloud services list –available
https://cloud.google.com/sdk/gcloud/reference/services/list#--available
--available
Return the services available to the project to enable. This list will include any services that the project has already enabled.
To list the services the current project has enabled for consumption, run:
gcloud services list --enabled
To list the services the current project can enable for consumption, run:
gcloud services list –available
