Yep. This will easily make 2x IM. I feel like 300m in its 4 release weekends is the floor. My bet is on 400m+ by the end, and then perhaps an extension through the Holidays due to it still playing well. If that happens I could see 500m happen.
These numbers might sound crazy but only if you haven't seen the Eras Tour numbers. I know they aren't officially out yet cause I believe Taylor is waiting for a specific milestone, but it's in the billions. She's clearing 13m a night, and that's in a single city, of which have multiple nights. I don't know one person who went to the concert who isn't going back to relive the fun they had for much cheaper and less effort. Not to mention each show had gatherings of thousands outside the venue to listen and sing along who will undoubtedly attend the film to actually see the show.
Just from concert/venue-goer attendance alone this will make $90m+, and that's not counting repeat viewings.