Fun story: My adult daughter lives at home. She does our shopping and came home one day with a toilet bowl brush that was "revolutionary" (my words based on her excitement about it) because it is refillable and can be used to clean the outside and the inside of the toilet.

Recognizing this as a refill subscription, I forbade its use. It sits there, unwilling to be thrown away, and unable to be used. If not for the receipt being lost, it would have been immediately returned!

If anything requires repeated payments to be useful, it's a subscription.