If they don’t, it will be the worst marketing ever.
Only if the movie fails.
Results don’t validate process.
I don’t think anyone here can really speak to what makes for success in marketing (especially when you consider most of us will see it anyway, trailer or not). I don’t think they wouldn’t put out another trailer, but if they don’t, they obviously have reasoning for that. If the movie succeeds, then clearly they had good reasoning.
https://www.affim.com.au/wp-content/uploads/2018/01/process-300x118.png
Read what I wrote again.