Harmy said:

It was probably kind of unthinkable to store tens of terabytes of data in 1999.

Yeah, exactly. I mean, the film was released in 1999, but the scan took place in 1997. I think we forget how absolutely primitive data storage was back then. My computer from 1998 had something like 4 GB of storage on it. Can you imagine suggesting 500 GB drives? And can you imagine suggesting, "So, this digital master is gonna be about 16 TBs in size...." Probably they would have said, what's a terabyte. Which is why probably what happened is each shot occupied a drive of a few GBs and it was printed out individually onto 35mm negatives and then cut together. Maybe they migrated it all to increasingly larger servers over the years, but the film would have been on a server farm of hundreds of drives, and not necessarily all in one centralized place, so they might have just wiped it all clean when the film came out. But who knows for sure.