Why doesn't PPV allow you to set the number of views for a single item?

Maybe I am misunderstanding the set up, but it appears that the number of views can only be set for daily passes and subscriptions. That presents a major drawback. In my case, I would like to set the the number of times (or a days) a person can watch an instructional video. That seems natural to me.

I’m not giving my visitors much of a choice if I say “Hey, you can only watch this video once. If you want to watch it more than once, you have to pay for a full access pass.” I prefer to say “You can pay a few dollars and you are entitled to watch this as much as you want. You can purchase access to as many videos as you want this way, but you may find it more economical to pay for a full access pass.”

I look forward to your response.