Perhaps pay-per-episode with a discounted price for an entire series (and an option to buy the remainders taking that into account). It seems fair to be able to dip your toe into a series and try a few episodes before committing. On the other hand, that seems just a bit too consumer-friendly...
For the subset of Amazon-available content that isn't counted as Prime Video I think yes, but not for the rest of it. Apple TV+ possibly too, though they also have what feels like their own confusing model that shows some things as being available with the caveat that it's actually available through either a) a proxy with a subscription to a third party or b) a one-time purchase from them. I'd hate to be in the meetings where the details of these licensing agreements get hashed out.
