If two people use the same Apple ID for logging into "iTunes & App Store" on iOS, then they can share app purchases, including the purchase of in-app subscriptions like HBO Now (or Netflix).
If two people use separate Apple IDs for logging into "iTunes & App Store", but link the Apple IDs via iCloud Family Sharing, then they can still share app purchases. However, they cannot share in-app purchases.
HBO Now (and Netflix) are in-app subscription purchases. So does this mean that, if I use iCloud Family Sharing, there is be no way to share a single subscription to HBO Now so that it can be used by everyone in my family?
Is there a way around this, that allows the family to use iCloud Family Sharing but still allows everyone to be able to use HBO now from their devices?