Disney has somehow managed to get their hand on so many key productions (Marvel, Lucasfilm, 21st Century Fox) that it is definitely worth it to get Disney+ as your favourite movie is likely on it. Their position is further strengthened by the fact that Marvel has many movies and tv-shows in line with their Phase Four productions.
I also did not agree with Netflix cancelling popular contemporary shows such as Patriot Act (which had such a loyal following – although there are some rumours that it was cancelled due to getting on the wrong side of certain countries). WIth contemporary/weekly shows, you definitely can get recurring views just by investing in one show and I don’t agree with it from a business point of view.
With the rest, I do feel there might be subscription fatigue and a likely winner from this might be Youtube because I think you can just buy the movies you want to watch – old school haha.