Probably to "match" equal chances of the players from other corners of the world who do not have opportunity to farm packs.

Imagine to live in Serbia (where the devs are from) or Thailand or lets say Turkey (lots of players from these countries) they have 0 packs a day

and then you have players from

UK, US, Germany, France etc... and they have plenty packs a day ....

Fair ?

I doubt haha