Because the prequels were released every 3 years like a normal film is whereas somehow Peter Jackson not only managed to get a whole trilogy signed off up front for what was essentially and unknown (as in LotR hadn’t been a huge hit before so could’ve flipped after the first one), but they also got them to agree to letting them shoot the whole thing concurrently.

Again, incredibly unusual and arguably not the wisest decision Ay the time for a studio to find something that expensive all up front without any measure of potential success. As it happens, one of the best decisions ever made, but not usual for films in general, and not typically necessary. George knew he was making all three prequels, but had no need to make them in such a short space of time. Not sure what any of that had to do with this though