I can see where you are coming from but over here we use the term voucher as a general term for claiming anything. It's just a voucher to say that you can claim a pack when there is huge demand and stops others from claiming something that you are ahead of them for.

Anyway, people without vouchers will be able to buy as soon as the presale is over as there will be plenty packs to go around and they will all be released for play at the same time. No reason for any friction as everybody who wants to buy can buy. They just won't get the extra perks of being a premium member which comes form large investment in the game from an early stage.