Take a look at modern Cable for some ideas. How about "commercial breaks" every 10 mins? Why not some "premium content" you have to pay extra for on top of your subscription e.g. want to watch Stranger Things? Sorry that's not included, you'll have to pay $7.99 extra per month.

Things will regress to the mean until someone else comes along and disrupts streaming, just like streaming did to cable. And then when everyone moves, that option will start getting shitty.