This is utterly crazy considering there’s a skit on the Saturday Night Live Season 4 DVD set that has both Coke and Pepsi products shown in it! That had to have been cleared for the video release. Maybe NBC/Universal was willing to cut both companies a check?
Yeah, using the original posters would be fair use. There’s no need to clear licensing on anything. The only reason they were blurred to begin with is the movie had a deal with Pepsi, and that deal is definitely not in effect today. I wonder if they don’t have the original, un-blurred negative, and figured that replacing the blurs would be less distracting. It still doesn’t explain why they removed the coke logo from the cooler. I guess for consistency.