I think the thing that is most compelling about subscriptions is that it's much more difficult to extract e.g. $300 in lifetime value in a single transaction, v

I think the thing that is most compelling about subscriptions is that it's much more difficult to extract e.g. $300 in lifetime value in a single transaction, versus over 10 months. That psychological barrier is really the root of the reason it's so effective, in the same way that free shipping drives online retail and "discounting" drives retail clothing stores.