Game updates in the vault?

As we all know well, many disc games since the ps360 generation were digitally updated after release, so many images do not contain the final version of games.
Now there still remains possibility to download all the updates using utilities found in the internet, but one day it will be gone. Thus the aim of game preservation will fail.
Shouldn't this resource also host all the game updates while you can still download them?
Not just all game images that are hosted here now, but complete versions of games.