Disney is a bit unique with their streaming, though, because their content helps foster interest in their merchandise, parks, theatre movies, etc. The more engagement with their streaming content, the more likely someone is to engage with some other part of their business. Also, if I'm watching Disney+, I'm not watch any other streaming services (at that moment). They want to be a dominant streaming service because it helps them dominate in the parts of their business.

Netflix, Paramount+, etc. don't really have that, at least not to the same degree. Prime is more similar, because while you're not investing in their own merchandise as much, you might be more like to use Prime shipping or music if you have Prime for video streaming (and vice versa).