I am aware of the concept of ownership skew (https://developer.salesforce.com/blogs/engineering/2012/06/architect-salesforce-record-ownership-skew-for-peak-performance-in-large-data-volume-environments.html), but is this also a problem for a parent - child relationship outside the concept of owning a record?
A more specific example is I am looking at entitlements and currently every Case/Contact would be associated to the same entitlement. Would this cause any issues over time?