Correct. Cars and Villains will be vastly more populated than the Rivers of America and TSI ever were. Both provide an expansion of accessible space for all guests as well as the obvious sales of merch, food, LLs.
For Launch bay it’s a question of what property they’re putting in that area. With that and some of the offices it’s a much larger expansion than Muppets Courtyard. Mv3D was given a death blow when they closed off additional thruway access by building Galaxy’s edge and now they need something bigger to draw guests into that segment.
Launch Bay probably has a plan in place or in the works as well, there’s just more logistics involved with work in that area.
Hindsight they probably should have closed Muppetvision then, during the Galaxy's Edge expansion, and tied Star Tours/Galaxy's Edge together more cohesively by eliminating the Muppets Courtyard area. Then they could have made Toy Story Land larger, maybe added a show or something. But that's water under the bridge now.