Family Library For Google Play Purchases Is Official, App Purchases Will Be Shared Among Up To Six Family Members Starting July 2nd
I am not sure if Google can enforce this policy on apps purchased after June 2. Developers are not going to be happy if there is no opt-out.
When Family Library becomes available to users, up to six family members will be able to share purchased apps on Google Play.
Opt-in previous purchases to Family Library
By default, all paid apps purchased after July 2, 2016 (when the Developer Distribution Agreement update takes effect) will be eligible for Family Library.
To provide a seamless user experience, we suggest you allow users to share purchases made prior to this date as well.
I am not sure if Google can enforce this policy on apps purchased after June 2. Developers are not going to be happy if there is no opt-out.