We got into a bad situation with cable because we didn't have a choice. It was either pay $80 per month for everything, or not watch TV at all.
We have choices now, and Disney isn't going to be able to force their service on anyone. If people really like their new products and think it's worth the money, then fine. If people hate having to pay them separately and no one signs up, then they'll shut it down and go back to how it is now. Consumers have a lot of power now, and whatever happens will likely be in their interests.
I personally would be willing to pay a good bit of money to have access to the full back catalog of films from all the major studios. The streaming services' catalogs are very limited, and I'm often in the mood to watch one particular movie that isn't available. Spotify has nearly every song I ever want to listen to. Nothing exists like that for movies.