>>25075694This. It's similar to how much a game is compressed; older games would squeeze as much as possible into a few MB, and in the specific case of GSC, Game Freak had Iwata make a special compression method for the game that saved a ton of space in the ROM and allowed a truncated Kanto to be put in the game (not that this isn't a well-known story).
Now people don't even try, current-gen PC games go above 40GB at times because devs don't give a shit about space and just assume the customer will buy a 1TB harddrive to make more room.
>>25075710Nah, it's cooler to go full Final Fantasy and have it be a shower of meteors.