No. These properties are owned by corporations. Writers are hired by those corporations to do what they're told. It's almost impossible to sell a new spec project and has been for the last decade, at least. These decisions are made by bean counters who figure that they can make a return on investment with less risk on a mediocre franchise film that will have a built-in audience they can calculate, rather than spending that same investment on a new idea that nobody knows.
I agree to a point.
However look at the example of Star Wars. A great IP. Huge sandbox to play in. Yet the director set about destroying it and was successful.
Something like the MCU was very successful, but I expect it to be trashed by some writer who wants a gay disabled trans super hero and gets handed Firestorm as their character.