You can always sub to one service for a few months, catch up, then change to another.
Disney is going to be a tough one to beat I think. Apparently it's priced at like $6-$7 per month or so.
True, although a lot of services are tying themselves to something else. Hulu is connected to Sprint. Netflix is with some other phone (AT&T? Verozon?). Amazon is with Prime of course. WHichever of these bundled services you have is your base, then it is a question of how much you want to throw at other services.
My base is hulu, amazon, and buying movies on vudu. Disney will be a no-brainer and it seems like they will always have something new (plus I will do the yearly plan of course). So the question is if I will pay for something else. Probably not. Add in free services, cable, and anything you have bought. Oh, do not forget sleeping, work, and a life. You are probably already past the number of hours in a year to watch any new content you are interested in.
I am guessing I will put disney+ on top of my base and leave it there. So far I have heard very little on the other services that would tempt me and that is not enough to buy the whole service. I will just wait a couple of years for when they put those things on digital download, like the time bandits series (I have been waiting since the movie so what is a couple years more).