Cluster policies now support limiting the max number of clusters per user can create
Policy permissions allow you to set a max number of clusters per user. This determines how many clusters a user can create using that policy. If the user exceeds the limit, the operation fails.
To restrict the number of clusters a user can create using a policy, use the Max clusters per user setting under the Permissions tab in the cluster policies UI.
Cluster Policies API 2.0
Ajay Kumar Pandey